Home / 651,334.10-977,001.15-438,757.70

Finding the Fourth Proportional to 651,334.10, 977,001.15 and 438,757.70

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Solution

The fourth proportional to 651,334.10, 977,001.15 and 438,757.70 is: 658,136.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,334.10 : 977,001.15 = 438,757.70 : x
  2. Step 2: Convert to fraction form
    651,334.10/977,001.15 = 438,757.70/x
  3. Step 3: Cross multiply
    651,334.10x = 977,001.15 × 438,757.70
  4. Step 4: Simplify right side
    651,334.10x = 428,666,777,471.36
  5. Step 5: Solve for x
    x = 428,666,777,471.36/651,334.10
  6. Step 6: Final answer
    x = 658,136.55

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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.