Home / 731,640.76-1,009,703.46-409,331.64

Finding the Fourth Proportional to 731,640.76, 1,009,703.46 and 409,331.64

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Solution

The fourth proportional to 731,640.76, 1,009,703.46 and 409,331.64 is: 564,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,640.76 : 1,009,703.46 = 409,331.64 : x
  2. Step 2: Convert to fraction form
    731,640.76/1,009,703.46 = 409,331.64/x
  3. Step 3: Cross multiply
    731,640.76x = 1,009,703.46 × 409,331.64
  4. Step 4: Simplify right side
    731,640.76x = 413,303,573,195.47
  5. Step 5: Solve for x
    x = 413,303,573,195.47/731,640.76
  6. Step 6: Final answer
    x = 564,899.60

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.