Home / 861,940.08-1,189,479.06-479,980.53

Finding the Fourth Proportional to 861,940.08, 1,189,479.06 and 479,980.53

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Solution

The fourth proportional to 861,940.08, 1,189,479.06 and 479,980.53 is: 662,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,940.08 : 1,189,479.06 = 479,980.53 : x
  2. Step 2: Convert to fraction form
    861,940.08/1,189,479.06 = 479,980.53/x
  3. Step 3: Cross multiply
    861,940.08x = 1,189,479.06 × 479,980.53
  4. Step 4: Simplify right side
    861,940.08x = 570,926,789,642.70
  5. Step 5: Solve for x
    x = 570,926,789,642.70/861,940.08
  6. Step 6: Final answer
    x = 662,374.11

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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.