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Finding the Fourth Proportional to 504,940.80, 757,411.20 and 255,590.40

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Solution

The fourth proportional to 504,940.80, 757,411.20 and 255,590.40 is: 383,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,940.80 : 757,411.20 = 255,590.40 : x
  2. Step 2: Convert to fraction form
    504,940.80/757,411.20 = 255,590.40/x
  3. Step 3: Cross multiply
    504,940.80x = 757,411.20 × 255,590.40
  4. Step 4: Simplify right side
    504,940.80x = 193,587,031,572.48
  5. Step 5: Solve for x
    x = 193,587,031,572.48/504,940.80
  6. Step 6: Final answer
    x = 383,385.60

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Similar ratio
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1.5x scale

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.