Home / 859,136.72-1,288,211.25-354,046.40

Finding the Fourth Proportional to 859,136.72, 1,288,211.25 and 354,046.40

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Solution

The fourth proportional to 859,136.72, 1,288,211.25 and 354,046.40 is: 530,866.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,136.72 : 1,288,211.25 = 354,046.40 : x
  2. Step 2: Convert to fraction form
    859,136.72/1,288,211.25 = 354,046.40/x
  3. Step 3: Cross multiply
    859,136.72x = 1,288,211.25 × 354,046.40
  4. Step 4: Simplify right side
    859,136.72x = 456,086,555,502
  5. Step 5: Solve for x
    x = 456,086,555,502/859,136.72
  6. Step 6: Final answer
    x = 530,866.09

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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.