Home / 853,403.10-1,280,104.65-433,499.10

Finding the Fourth Proportional to 853,403.10, 1,280,104.65 and 433,499.10

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Solution

The fourth proportional to 853,403.10, 1,280,104.65 and 433,499.10 is: 650,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,403.10 : 1,280,104.65 = 433,499.10 : x
  2. Step 2: Convert to fraction form
    853,403.10/1,280,104.65 = 433,499.10/x
  3. Step 3: Cross multiply
    853,403.10x = 1,280,104.65 × 433,499.10
  4. Step 4: Simplify right side
    853,403.10x = 554,924,213,680.82
  5. Step 5: Solve for x
    x = 554,924,213,680.82/853,403.10
  6. Step 6: Final answer
    x = 650,248.65

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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.