Home / 1,216,645.43-1,678,981.56-672,817.80

Finding the Fourth Proportional to 1,216,645.43, 1,678,981.56 and 672,817.80

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Solution

The fourth proportional to 1,216,645.43, 1,678,981.56 and 672,817.80 is: 928,494.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,645.43 : 1,678,981.56 = 672,817.80 : x
  2. Step 2: Convert to fraction form
    1,216,645.43/1,678,981.56 = 672,817.80/x
  3. Step 3: Cross multiply
    1,216,645.43x = 1,678,981.56 × 672,817.80
  4. Step 4: Simplify right side
    1,216,645.43x = 1,129,648,679,439.77
  5. Step 5: Solve for x
    x = 1,129,648,679,439.77/1,216,645.43
  6. Step 6: Final answer
    x = 928,494.58

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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.