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Finding the Fourth Proportional to 656,186.40, 984,279.60 and 652,039.20

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Solution

The fourth proportional to 656,186.40, 984,279.60 and 652,039.20 is: 978,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,186.40 : 984,279.60 = 652,039.20 : x
  2. Step 2: Convert to fraction form
    656,186.40/984,279.60 = 652,039.20/x
  3. Step 3: Cross multiply
    656,186.40x = 984,279.60 × 652,039.20
  4. Step 4: Simplify right side
    656,186.40x = 641,788,882,960.32
  5. Step 5: Solve for x
    x = 641,788,882,960.32/656,186.40
  6. Step 6: Final answer
    x = 978,058.80

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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.