Home / 804,686.10-1,207,029.15-431,438.10

Finding the Fourth Proportional to 804,686.10, 1,207,029.15 and 431,438.10

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Solution

The fourth proportional to 804,686.10, 1,207,029.15 and 431,438.10 is: 647,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,686.10 : 1,207,029.15 = 431,438.10 : x
  2. Step 2: Convert to fraction form
    804,686.10/1,207,029.15 = 431,438.10/x
  3. Step 3: Cross multiply
    804,686.10x = 1,207,029.15 × 431,438.10
  4. Step 4: Simplify right side
    804,686.10x = 520,758,363,120.62
  5. Step 5: Solve for x
    x = 520,758,363,120.62/804,686.10
  6. Step 6: Final answer
    x = 647,157.15

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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.