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Finding the Fourth Proportional to 486,076.40, 729,114.60 and 397,502.90

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Solution

The fourth proportional to 486,076.40, 729,114.60 and 397,502.90 is: 596,254.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,076.40 : 729,114.60 = 397,502.90 : x
  2. Step 2: Convert to fraction form
    486,076.40/729,114.60 = 397,502.90/x
  3. Step 3: Cross multiply
    486,076.40x = 729,114.60 × 397,502.90
  4. Step 4: Simplify right side
    486,076.40x = 289,825,167,932.34
  5. Step 5: Solve for x
    x = 289,825,167,932.34/486,076.40
  6. Step 6: Final answer
    x = 596,254.35

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Double scale
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Similar ratio
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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.