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Finding the Fourth Proportional to 656,427.90, 984,641.85 and 652,280.70

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Solution

The fourth proportional to 656,427.90, 984,641.85 and 652,280.70 is: 978,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,427.90 : 984,641.85 = 652,280.70 : x
  2. Step 2: Convert to fraction form
    656,427.90/984,641.85 = 652,280.70/x
  3. Step 3: Cross multiply
    656,427.90x = 984,641.85 × 652,280.70
  4. Step 4: Simplify right side
    656,427.90x = 642,262,875,167.30
  5. Step 5: Solve for x
    x = 642,262,875,167.30/656,427.90
  6. Step 6: Final answer
    x = 978,421.05

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Similar ratio
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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.