Home / 672,135.69-1,005,834.27-419,534.76

Finding the Fourth Proportional to 672,135.69, 1,005,834.27 and 419,534.76

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Solution

The fourth proportional to 672,135.69, 1,005,834.27 and 419,534.76 is: 627,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,135.69 : 1,005,834.27 = 419,534.76 : x
  2. Step 2: Convert to fraction form
    672,135.69/1,005,834.27 = 419,534.76/x
  3. Step 3: Cross multiply
    672,135.69x = 1,005,834.27 × 419,534.76
  4. Step 4: Simplify right side
    672,135.69x = 421,982,439,064.23
  5. Step 5: Solve for x
    x = 421,982,439,064.23/672,135.69
  6. Step 6: Final answer
    x = 627,823.29

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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.