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Finding the Fourth Proportional to 492,762.80, 737,761.80 and 478,938.80

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Solution

The fourth proportional to 492,762.80, 737,761.80 and 478,938.80 is: 717,064.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,762.80 : 737,761.80 = 478,938.80 : x
  2. Step 2: Convert to fraction form
    492,762.80/737,761.80 = 478,938.80/x
  3. Step 3: Cross multiply
    492,762.80x = 737,761.80 × 478,938.80
  4. Step 4: Simplify right side
    492,762.80x = 353,342,751,177.84
  5. Step 5: Solve for x
    x = 353,342,751,177.84/492,762.80
  6. Step 6: Final answer
    x = 717,064.58

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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.