Home / 762,717.90-1,144,076.85-621,000.30

Finding the Fourth Proportional to 762,717.90, 1,144,076.85 and 621,000.30

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Solution

The fourth proportional to 762,717.90, 1,144,076.85 and 621,000.30 is: 931,500.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,717.90 : 1,144,076.85 = 621,000.30 : x
  2. Step 2: Convert to fraction form
    762,717.90/1,144,076.85 = 621,000.30/x
  3. Step 3: Cross multiply
    762,717.90x = 1,144,076.85 × 621,000.30
  4. Step 4: Simplify right side
    762,717.90x = 710,472,067,073.06
  5. Step 5: Solve for x
    x = 710,472,067,073.06/762,717.90
  6. Step 6: Final answer
    x = 931,500.45

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Half scale
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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.