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Finding the Fourth Proportional to 577,455.30, 865,198.80 and 492,818.40

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Solution

The fourth proportional to 577,455.30, 865,198.80 and 492,818.40 is: 738,387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,455.30 : 865,198.80 = 492,818.40 : x
  2. Step 2: Convert to fraction form
    577,455.30/865,198.80 = 492,818.40/x
  3. Step 3: Cross multiply
    577,455.30x = 865,198.80 × 492,818.40
  4. Step 4: Simplify right side
    577,455.30x = 426,385,888,297.92
  5. Step 5: Solve for x
    x = 426,385,888,297.92/577,455.30
  6. Step 6: Final answer
    x = 738,387.70

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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.