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Finding the Fourth Proportional to 577,505.30, 865,273.80 and 492,868.40

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Solution

The fourth proportional to 577,505.30, 865,273.80 and 492,868.40 is: 738,462.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,505.30 : 865,273.80 = 492,868.40 : x
  2. Step 2: Convert to fraction form
    577,505.30/865,273.80 = 492,868.40/x
  3. Step 3: Cross multiply
    577,505.30x = 865,273.80 × 492,868.40
  4. Step 4: Simplify right side
    577,505.30x = 426,466,113,367.92
  5. Step 5: Solve for x
    x = 426,466,113,367.92/577,505.30
  6. Step 6: Final answer
    x = 738,462.68

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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.