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Finding the Fourth Proportional to 753,124.80, 1,129,330.80 and 437,678.40

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Solution

The fourth proportional to 753,124.80, 1,129,330.80 and 437,678.40 is: 656,310.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,124.80 : 1,129,330.80 = 437,678.40 : x
  2. Step 2: Convert to fraction form
    753,124.80/1,129,330.80 = 437,678.40/x
  3. Step 3: Cross multiply
    753,124.80x = 1,129,330.80 × 437,678.40
  4. Step 4: Simplify right side
    753,124.80x = 494,283,697,614.72
  5. Step 5: Solve for x
    x = 494,283,697,614.72/753,124.80
  6. Step 6: Final answer
    x = 656,310.48

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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.