Home / 880,405.40-1,320,608.10-431,195.60

Finding the Fourth Proportional to 880,405.40, 1,320,608.10 and 431,195.60

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Solution

The fourth proportional to 880,405.40, 1,320,608.10 and 431,195.60 is: 646,793.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,405.40 : 1,320,608.10 = 431,195.60 : x
  2. Step 2: Convert to fraction form
    880,405.40/1,320,608.10 = 431,195.60/x
  3. Step 3: Cross multiply
    880,405.40x = 1,320,608.10 × 431,195.60
  4. Step 4: Simplify right side
    880,405.40x = 569,440,402,044.36
  5. Step 5: Solve for x
    x = 569,440,402,044.36/880,405.40
  6. Step 6: Final answer
    x = 646,793.40

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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.