Home / 725,136.40-1,087,704.60-620,160.40

Finding the Fourth Proportional to 725,136.40, 1,087,704.60 and 620,160.40

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Solution

The fourth proportional to 725,136.40, 1,087,704.60 and 620,160.40 is: 930,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,136.40 : 1,087,704.60 = 620,160.40 : x
  2. Step 2: Convert to fraction form
    725,136.40/1,087,704.60 = 620,160.40/x
  3. Step 3: Cross multiply
    725,136.40x = 1,087,704.60 × 620,160.40
  4. Step 4: Simplify right side
    725,136.40x = 674,551,319,817.84
  5. Step 5: Solve for x
    x = 674,551,319,817.84/725,136.40
  6. Step 6: Final answer
    x = 930,240.60

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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.