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Finding the Fourth Proportional to 488,009.13, 730,740.47 and 392,718.83

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Solution

The fourth proportional to 488,009.13, 730,740.47 and 392,718.83 is: 588,053.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,009.13 : 730,740.47 = 392,718.83 : x
  2. Step 2: Convert to fraction form
    488,009.13/730,740.47 = 392,718.83/x
  3. Step 3: Cross multiply
    488,009.13x = 730,740.47 × 392,718.83
  4. Step 4: Simplify right side
    488,009.13x = 286,975,536,794.75
  5. Step 5: Solve for x
    x = 286,975,536,794.75/488,009.13
  6. Step 6: Final answer
    x = 588,053.62

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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.