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Finding the Fourth Proportional to 577,439.30, 865,174.80 and 492,802.40

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Solution

The fourth proportional to 577,439.30, 865,174.80 and 492,802.40 is: 738,363.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,439.30 : 865,174.80 = 492,802.40 : x
  2. Step 2: Convert to fraction form
    577,439.30/865,174.80 = 492,802.40/x
  3. Step 3: Cross multiply
    577,439.30x = 865,174.80 × 492,802.40
  4. Step 4: Simplify right side
    577,439.30x = 426,360,217,859.52
  5. Step 5: Solve for x
    x = 426,360,217,859.52/577,439.30
  6. Step 6: Final answer
    x = 738,363.70

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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.