Home / 869,162,677.30-1,303,744,015.95-665,089,333.30

Finding the Fourth Proportional to 869,162,677.30, 1,303,744,015.95 and 665,089,333.30

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Solution

The fourth proportional to 869,162,677.30, 1,303,744,015.95 and 665,089,333.30 is: 997,633,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,162,677.30 : 1,303,744,015.95 = 665,089,333.30 : x
  2. Step 2: Convert to fraction form
    869,162,677.30/1,303,744,015.95 = 665,089,333.30/x
  3. Step 3: Cross multiply
    869,162,677.30x = 1,303,744,015.95 × 665,089,333.30
  4. Step 4: Simplify right side
    869,162,677.30x = 867,106,238,362,050,048
  5. Step 5: Solve for x
    x = 867,106,238,362,050,048/869,162,677.30
  6. Step 6: Final answer
    x = 997,633,999.95

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Half scale
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Double scale
Find fourth proportional to 869,162,678.30, 1,303,744,017.45 and 665,089,334.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.