Home / 664,979.40-997,469.10-265,681.80

Finding the Fourth Proportional to 664,979.40, 997,469.10 and 265,681.80

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Solution

The fourth proportional to 664,979.40, 997,469.10 and 265,681.80 is: 398,522.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,979.40 : 997,469.10 = 265,681.80 : x
  2. Step 2: Convert to fraction form
    664,979.40/997,469.10 = 265,681.80/x
  3. Step 3: Cross multiply
    664,979.40x = 997,469.10 × 265,681.80
  4. Step 4: Simplify right side
    664,979.40x = 265,009,385,932.38
  5. Step 5: Solve for x
    x = 265,009,385,932.38/664,979.40
  6. Step 6: Final answer
    x = 398,522.70

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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.