Home / 754,430.40-1,131,645.60-354,938.40

Finding the Fourth Proportional to 754,430.40, 1,131,645.60 and 354,938.40

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Solution

The fourth proportional to 754,430.40, 1,131,645.60 and 354,938.40 is: 532,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,430.40 : 1,131,645.60 = 354,938.40 : x
  2. Step 2: Convert to fraction form
    754,430.40/1,131,645.60 = 354,938.40/x
  3. Step 3: Cross multiply
    754,430.40x = 1,131,645.60 × 354,938.40
  4. Step 4: Simplify right side
    754,430.40x = 401,664,478,631.04
  5. Step 5: Solve for x
    x = 401,664,478,631.04/754,430.40
  6. Step 6: Final answer
    x = 532,407.60

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