Home / 865,484.87-1,298,267.40-266,472.86

Finding the Fourth Proportional to 865,484.87, 1,298,267.40 and 266,472.86

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Solution

The fourth proportional to 865,484.87, 1,298,267.40 and 266,472.86 is: 399,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,484.87 : 1,298,267.40 = 266,472.86 : x
  2. Step 2: Convert to fraction form
    865,484.87/1,298,267.40 = 266,472.86/x
  3. Step 3: Cross multiply
    865,484.87x = 1,298,267.40 × 266,472.86
  4. Step 4: Simplify right side
    865,484.87x = 345,953,027,122.76
  5. Step 5: Solve for x
    x = 345,953,027,122.76/865,484.87
  6. Step 6: Final answer
    x = 399,721.63

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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.