Home / 643,136.96-887,531.04-356,683.52

Finding the Fourth Proportional to 643,136.96, 887,531.04 and 356,683.52

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Solution

The fourth proportional to 643,136.96, 887,531.04 and 356,683.52 is: 492,224.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,136.96 : 887,531.04 = 356,683.52 : x
  2. Step 2: Convert to fraction form
    643,136.96/887,531.04 = 356,683.52/x
  3. Step 3: Cross multiply
    643,136.96x = 887,531.04 × 356,683.52
  4. Step 4: Simplify right side
    643,136.96x = 316,567,695,456.46
  5. Step 5: Solve for x
    x = 316,567,695,456.46/643,136.96
  6. Step 6: Final answer
    x = 492,224.39

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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.