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Finding the Fourth Proportional to 656,618.40, 906,584.40 and 495,655.20

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Solution

The fourth proportional to 656,618.40, 906,584.40 and 495,655.20 is: 684,344.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,618.40 : 906,584.40 = 495,655.20 : x
  2. Step 2: Convert to fraction form
    656,618.40/906,584.40 = 495,655.20/x
  3. Step 3: Cross multiply
    656,618.40x = 906,584.40 × 495,655.20
  4. Step 4: Simplify right side
    656,618.40x = 449,353,272,098.88
  5. Step 5: Solve for x
    x = 449,353,272,098.88/656,618.40
  6. Step 6: Final answer
    x = 684,344.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.