Home / 900,299,387.91-1,242,543,112.17-518,748,346.73

Finding the Fourth Proportional to 900,299,387.91, 1,242,543,112.17 and 518,748,346.73

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Solution

The fourth proportional to 900,299,387.91, 1,242,543,112.17 and 518,748,346.73 is: 715,947,599.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,299,387.91 : 1,242,543,112.17 = 518,748,346.73 : x
  2. Step 2: Convert to fraction form
    900,299,387.91/1,242,543,112.17 = 518,748,346.73/x
  3. Step 3: Cross multiply
    900,299,387.91x = 1,242,543,112.17 × 518,748,346.73
  4. Step 4: Simplify right side
    900,299,387.91x = 644,567,185,172,723,840
  5. Step 5: Solve for x
    x = 644,567,185,172,723,840/900,299,387.91
  6. Step 6: Final answer
    x = 715,947,599.02

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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.