Home / 812,675.13-1,121,499.92-490,322.91

Finding the Fourth Proportional to 812,675.13, 1,121,499.92 and 490,322.91

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Solution

The fourth proportional to 812,675.13, 1,121,499.92 and 490,322.91 is: 676,650.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,675.13 : 1,121,499.92 = 490,322.91 : x
  2. Step 2: Convert to fraction form
    812,675.13/1,121,499.92 = 490,322.91/x
  3. Step 3: Cross multiply
    812,675.13x = 1,121,499.92 × 490,322.91
  4. Step 4: Simplify right side
    812,675.13x = 549,897,101,887.55
  5. Step 5: Solve for x
    x = 549,897,101,887.55/812,675.13
  6. Step 6: Final answer
    x = 676,650.58

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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.