Home / 860,169.10-1,290,253.65-807,681.10

Finding the Fourth Proportional to 860,169.10, 1,290,253.65 and 807,681.10

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Solution

The fourth proportional to 860,169.10, 1,290,253.65 and 807,681.10 is: 1,211,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,169.10 : 1,290,253.65 = 807,681.10 : x
  2. Step 2: Convert to fraction form
    860,169.10/1,290,253.65 = 807,681.10/x
  3. Step 3: Cross multiply
    860,169.10x = 1,290,253.65 × 807,681.10
  4. Step 4: Simplify right side
    860,169.10x = 1,042,113,487,311.01
  5. Step 5: Solve for x
    x = 1,042,113,487,311.01/860,169.10
  6. Step 6: Final answer
    x = 1,211,521.65

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Double scale
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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.