Home / 656,312.20-984,857.10-478,371.40

Finding the Fourth Proportional to 656,312.20, 984,857.10 and 478,371.40

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Solution

The fourth proportional to 656,312.20, 984,857.10 and 478,371.40 is: 717,840.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,312.20 : 984,857.10 = 478,371.40 : x
  2. Step 2: Convert to fraction form
    656,312.20/984,857.10 = 478,371.40/x
  3. Step 3: Cross multiply
    656,312.20x = 984,857.10 × 478,371.40
  4. Step 4: Simplify right side
    656,312.20x = 471,127,469,726.94
  5. Step 5: Solve for x
    x = 471,127,469,726.94/656,312.20
  6. Step 6: Final answer
    x = 717,840.49

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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.