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Finding the Fourth Proportional to 870,526,418.88, 1,201,234,978.08 and 494,063,276.16

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Solution

The fourth proportional to 870,526,418.88, 1,201,234,978.08 and 494,063,276.16 is: 681,755,402.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,526,418.88 : 1,201,234,978.08 = 494,063,276.16 : x
  2. Step 2: Convert to fraction form
    870,526,418.88/1,201,234,978.08 = 494,063,276.16/x
  3. Step 3: Cross multiply
    870,526,418.88x = 1,201,234,978.08 × 494,063,276.16
  4. Step 4: Simplify right side
    870,526,418.88x = 593,486,088,708,190,592
  5. Step 5: Solve for x
    x = 593,486,088,708,190,592/870,526,418.88
  6. Step 6: Final answer
    x = 681,755,402.06

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.