Home / 645,894,437.40-968,841,656.10-386,976,382.20

Finding the Fourth Proportional to 645,894,437.40, 968,841,656.10 and 386,976,382.20

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Solution

The fourth proportional to 645,894,437.40, 968,841,656.10 and 386,976,382.20 is: 580,464,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,894,437.40 : 968,841,656.10 = 386,976,382.20 : x
  2. Step 2: Convert to fraction form
    645,894,437.40/968,841,656.10 = 386,976,382.20/x
  3. Step 3: Cross multiply
    645,894,437.40x = 968,841,656.10 × 386,976,382.20
  4. Step 4: Simplify right side
    645,894,437.40x = 374,918,839,002,234,560
  5. Step 5: Solve for x
    x = 374,918,839,002,234,560/645,894,437.40
  6. Step 6: Final answer
    x = 580,464,573.30

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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.