Home / 804,955.10-1,207,432.65-431,707.10

Finding the Fourth Proportional to 804,955.10, 1,207,432.65 and 431,707.10

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Solution

The fourth proportional to 804,955.10, 1,207,432.65 and 431,707.10 is: 647,560.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,955.10 : 1,207,432.65 = 431,707.10 : x
  2. Step 2: Convert to fraction form
    804,955.10/1,207,432.65 = 431,707.10/x
  3. Step 3: Cross multiply
    804,955.10x = 1,207,432.65 × 431,707.10
  4. Step 4: Simplify right side
    804,955.10x = 521,257,247,776.82
  5. Step 5: Solve for x
    x = 521,257,247,776.82/804,955.10
  6. Step 6: Final answer
    x = 647,560.65

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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.