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Finding the Fourth Proportional to 573,431.91, 791,345.61 and 315,320.04

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Solution

The fourth proportional to 573,431.91, 791,345.61 and 315,320.04 is: 435,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,431.91 : 791,345.61 = 315,320.04 : x
  2. Step 2: Convert to fraction form
    573,431.91/791,345.61 = 315,320.04/x
  3. Step 3: Cross multiply
    573,431.91x = 791,345.61 × 315,320.04
  4. Step 4: Simplify right side
    573,431.91x = 249,527,129,399.02
  5. Step 5: Solve for x
    x = 249,527,129,399.02/573,431.91
  6. Step 6: Final answer
    x = 435,146.92

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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.