Home / 709,738.40-1,064,607.60-485,789.60

Finding the Fourth Proportional to 709,738.40, 1,064,607.60 and 485,789.60

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Solution

The fourth proportional to 709,738.40, 1,064,607.60 and 485,789.60 is: 728,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,738.40 : 1,064,607.60 = 485,789.60 : x
  2. Step 2: Convert to fraction form
    709,738.40/1,064,607.60 = 485,789.60/x
  3. Step 3: Cross multiply
    709,738.40x = 1,064,607.60 × 485,789.60
  4. Step 4: Simplify right side
    709,738.40x = 517,175,300,160.96
  5. Step 5: Solve for x
    x = 517,175,300,160.96/709,738.40
  6. Step 6: Final answer
    x = 728,684.40

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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.