Home / 659,136.10-988,934.55-285,427.30

Finding the Fourth Proportional to 659,136.10, 988,934.55 and 285,427.30

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Solution

The fourth proportional to 659,136.10, 988,934.55 and 285,427.30 is: 428,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,136.10 : 988,934.55 = 285,427.30 : x
  2. Step 2: Convert to fraction form
    659,136.10/988,934.55 = 285,427.30/x
  3. Step 3: Cross multiply
    659,136.10x = 988,934.55 × 285,427.30
  4. Step 4: Simplify right side
    659,136.10x = 282,268,918,483.22
  5. Step 5: Solve for x
    x = 282,268,918,483.22/659,136.10
  6. Step 6: Final answer
    x = 428,240.72

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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.