Home / 664,688.10-997,032.15-398,748.90

Finding the Fourth Proportional to 664,688.10, 997,032.15 and 398,748.90

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Solution

The fourth proportional to 664,688.10, 997,032.15 and 398,748.90 is: 598,123.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,688.10 : 997,032.15 = 398,748.90 : x
  2. Step 2: Convert to fraction form
    664,688.10/997,032.15 = 398,748.90/x
  3. Step 3: Cross multiply
    664,688.10x = 997,032.15 × 398,748.90
  4. Step 4: Simplify right side
    664,688.10x = 397,565,473,077.14
  5. Step 5: Solve for x
    x = 397,565,473,077.14/664,688.10
  6. Step 6: Final answer
    x = 598,123.35

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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.