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Finding the Fourth Proportional to 492,755.80, 737,751.30 and 478,931.80

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Solution

The fourth proportional to 492,755.80, 737,751.30 and 478,931.80 is: 717,054.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,755.80 : 737,751.30 = 478,931.80 : x
  2. Step 2: Convert to fraction form
    492,755.80/737,751.30 = 478,931.80/x
  3. Step 3: Cross multiply
    492,755.80x = 737,751.30 × 478,931.80
  4. Step 4: Simplify right side
    492,755.80x = 353,332,558,061.34
  5. Step 5: Solve for x
    x = 353,332,558,061.34/492,755.80
  6. Step 6: Final answer
    x = 717,054.08

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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.