Home / 985,687.80-1,478,531.70-424,722.30

Finding the Fourth Proportional to 985,687.80, 1,478,531.70 and 424,722.30

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Solution

The fourth proportional to 985,687.80, 1,478,531.70 and 424,722.30 is: 637,083.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,687.80 : 1,478,531.70 = 424,722.30 : x
  2. Step 2: Convert to fraction form
    985,687.80/1,478,531.70 = 424,722.30/x
  3. Step 3: Cross multiply
    985,687.80x = 1,478,531.70 × 424,722.30
  4. Step 4: Simplify right side
    985,687.80x = 627,965,384,246.91
  5. Step 5: Solve for x
    x = 627,965,384,246.91/985,687.80
  6. Step 6: Final answer
    x = 637,083.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.