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Finding the Fourth Proportional to 652,126.70, 978,190.05 and 402,949.10

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Solution

The fourth proportional to 652,126.70, 978,190.05 and 402,949.10 is: 604,423.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,126.70 : 978,190.05 = 402,949.10 : x
  2. Step 2: Convert to fraction form
    652,126.70/978,190.05 = 402,949.10/x
  3. Step 3: Cross multiply
    652,126.70x = 978,190.05 × 402,949.10
  4. Step 4: Simplify right side
    652,126.70x = 394,160,800,276.46
  5. Step 5: Solve for x
    x = 394,160,800,276.46/652,126.70
  6. Step 6: Final answer
    x = 604,423.65

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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.