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Finding the Fourth Proportional to 492,239.40, 738,359.10 and 487,573.80

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Solution

The fourth proportional to 492,239.40, 738,359.10 and 487,573.80 is: 731,360.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,239.40 : 738,359.10 = 487,573.80 : x
  2. Step 2: Convert to fraction form
    492,239.40/738,359.10 = 487,573.80/x
  3. Step 3: Cross multiply
    492,239.40x = 738,359.10 × 487,573.80
  4. Step 4: Simplify right side
    492,239.40x = 360,004,552,151.58
  5. Step 5: Solve for x
    x = 360,004,552,151.58/492,239.40
  6. Step 6: Final answer
    x = 731,360.70

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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.