Home / 812,675.88-1,121,500.95-490,323.66

Finding the Fourth Proportional to 812,675.88, 1,121,500.95 and 490,323.66

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Solution

The fourth proportional to 812,675.88, 1,121,500.95 and 490,323.66 is: 676,651.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,675.88 : 1,121,500.95 = 490,323.66 : x
  2. Step 2: Convert to fraction form
    812,675.88/1,121,500.95 = 490,323.66/x
  3. Step 3: Cross multiply
    812,675.88x = 1,121,500.95 × 490,323.66
  4. Step 4: Simplify right side
    812,675.88x = 549,898,450,497.48
  5. Step 5: Solve for x
    x = 549,898,450,497.48/812,675.88
  6. Step 6: Final answer
    x = 676,651.62

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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.