Home / 804,927.10-1,207,390.65-431,679.10

Finding the Fourth Proportional to 804,927.10, 1,207,390.65 and 431,679.10

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Solution

The fourth proportional to 804,927.10, 1,207,390.65 and 431,679.10 is: 647,518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,927.10 : 1,207,390.65 = 431,679.10 : x
  2. Step 2: Convert to fraction form
    804,927.10/1,207,390.65 = 431,679.10/x
  3. Step 3: Cross multiply
    804,927.10x = 1,207,390.65 × 431,679.10
  4. Step 4: Simplify right side
    804,927.10x = 521,205,309,140.42
  5. Step 5: Solve for x
    x = 521,205,309,140.42/804,927.10
  6. Step 6: Final answer
    x = 647,518.65

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Half scale
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Double scale
Find fourth proportional to 804,928.10, 1,207,392.15 and 431,680.10
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.