Home / 812,675.38-1,121,500.26-490,323.16

Finding the Fourth Proportional to 812,675.38, 1,121,500.26 and 490,323.16

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Solution

The fourth proportional to 812,675.38, 1,121,500.26 and 490,323.16 is: 676,650.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,675.38 : 1,121,500.26 = 490,323.16 : x
  2. Step 2: Convert to fraction form
    812,675.38/1,121,500.26 = 490,323.16/x
  3. Step 3: Cross multiply
    812,675.38x = 1,121,500.26 × 490,323.16
  4. Step 4: Simplify right side
    812,675.38x = 549,897,551,424.02
  5. Step 5: Solve for x
    x = 549,897,551,424.02/812,675.38
  6. Step 6: Final answer
    x = 676,650.93

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Double scale
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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.