Home / 812,674.38-1,121,498.88-490,322.16

Finding the Fourth Proportional to 812,674.38, 1,121,498.88 and 490,322.16

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Solution

The fourth proportional to 812,674.38, 1,121,498.88 and 490,322.16 is: 676,649.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,674.38 : 1,121,498.88 = 490,322.16 : x
  2. Step 2: Convert to fraction form
    812,674.38/1,121,498.88 = 490,322.16/x
  3. Step 3: Cross multiply
    812,674.38x = 1,121,498.88 × 490,322.16
  4. Step 4: Simplify right side
    812,674.38x = 549,895,753,279.18
  5. Step 5: Solve for x
    x = 549,895,753,279.18/812,674.38
  6. Step 6: Final answer
    x = 676,649.55

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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.