Home / 812,699.82-1,121,534.16-490,347.62

Finding the Fourth Proportional to 812,699.82, 1,121,534.16 and 490,347.62

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Solution

The fourth proportional to 812,699.82, 1,121,534.16 and 490,347.62 is: 676,684.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,699.82 : 1,121,534.16 = 490,347.62 : x
  2. Step 2: Convert to fraction form
    812,699.82/1,121,534.16 = 490,347.62/x
  3. Step 3: Cross multiply
    812,699.82x = 1,121,534.16 × 490,347.62
  4. Step 4: Simplify right side
    812,699.82x = 549,941,606,104.70
  5. Step 5: Solve for x
    x = 549,941,606,104.70/812,699.82
  6. Step 6: Final answer
    x = 676,684.79

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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.