Home / 812,878.52-1,121,543.24-468,687.38

Finding the Fourth Proportional to 812,878.52, 1,121,543.24 and 468,687.38

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Solution

The fourth proportional to 812,878.52, 1,121,543.24 and 468,687.38 is: 646,656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,878.52 : 1,121,543.24 = 468,687.38 : x
  2. Step 2: Convert to fraction form
    812,878.52/1,121,543.24 = 468,687.38/x
  3. Step 3: Cross multiply
    812,878.52x = 1,121,543.24 × 468,687.38
  4. Step 4: Simplify right side
    812,878.52x = 525,653,162,712.31
  5. Step 5: Solve for x
    x = 525,653,162,712.31/812,878.52
  6. Step 6: Final answer
    x = 646,656.48

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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.