Home / 714,109.30-985,534.72-391,882.20

Finding the Fourth Proportional to 714,109.30, 985,534.72 and 391,882.20

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Solution

The fourth proportional to 714,109.30, 985,534.72 and 391,882.20 is: 540,832.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,109.30 : 985,534.72 = 391,882.20 : x
  2. Step 2: Convert to fraction form
    714,109.30/985,534.72 = 391,882.20/x
  3. Step 3: Cross multiply
    714,109.30x = 985,534.72 × 391,882.20
  4. Step 4: Simplify right side
    714,109.30x = 386,213,514,249.98
  5. Step 5: Solve for x
    x = 386,213,514,249.98/714,109.30
  6. Step 6: Final answer
    x = 540,832.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.