Home / 1,328,541,738.30-1,992,812,607.45-345,966,378.30

Finding the Fourth Proportional to 1,328,541,738.30, 1,992,812,607.45 and 345,966,378.30

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Solution

The fourth proportional to 1,328,541,738.30, 1,992,812,607.45 and 345,966,378.30 is: 518,949,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,541,738.30 : 1,992,812,607.45 = 345,966,378.30 : x
  2. Step 2: Convert to fraction form
    1,328,541,738.30/1,992,812,607.45 = 345,966,378.30/x
  3. Step 3: Cross multiply
    1,328,541,738.30x = 1,992,812,607.45 × 345,966,378.30
  4. Step 4: Simplify right side
    1,328,541,738.30x = 689,446,160,430,056,192
  5. Step 5: Solve for x
    x = 689,446,160,430,056,192/1,328,541,738.30
  6. Step 6: Final answer
    x = 518,949,567.45

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Double scale
Find fourth proportional to 1,328,541,739.30, 1,992,812,608.95 and 345,966,379.30
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.