Home / 732,085.70-1,098,128.55-643,512.20

Finding the Fourth Proportional to 732,085.70, 1,098,128.55 and 643,512.20

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Solution

The fourth proportional to 732,085.70, 1,098,128.55 and 643,512.20 is: 965,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    732,085.70 : 1,098,128.55 = 643,512.20 : x
  2. Step 2: Convert to fraction form
    732,085.70/1,098,128.55 = 643,512.20/x
  3. Step 3: Cross multiply
    732,085.70x = 1,098,128.55 × 643,512.20
  4. Step 4: Simplify right side
    732,085.70x = 706,659,119,093.31
  5. Step 5: Solve for x
    x = 706,659,119,093.31/732,085.70
  6. Step 6: Final answer
    x = 965,268.30

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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.