Home / 671,337.20-1,007,005.80-387,513.20

Finding the Fourth Proportional to 671,337.20, 1,007,005.80 and 387,513.20

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Solution

The fourth proportional to 671,337.20, 1,007,005.80 and 387,513.20 is: 581,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,337.20 : 1,007,005.80 = 387,513.20 : x
  2. Step 2: Convert to fraction form
    671,337.20/1,007,005.80 = 387,513.20/x
  3. Step 3: Cross multiply
    671,337.20x = 1,007,005.80 × 387,513.20
  4. Step 4: Simplify right side
    671,337.20x = 390,228,039,976.56
  5. Step 5: Solve for x
    x = 390,228,039,976.56/671,337.20
  6. Step 6: Final answer
    x = 581,269.80

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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.