Home / 1,216,645.32-1,678,981.44-672,817.71

Finding the Fourth Proportional to 1,216,645.32, 1,678,981.44 and 672,817.71

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Solution

The fourth proportional to 1,216,645.32, 1,678,981.44 and 672,817.71 is: 928,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,645.32 : 1,678,981.44 = 672,817.71 : x
  2. Step 2: Convert to fraction form
    1,216,645.32/1,678,981.44 = 672,817.71/x
  3. Step 3: Cross multiply
    1,216,645.32x = 1,678,981.44 × 672,817.71
  4. Step 4: Simplify right side
    1,216,645.32x = 1,129,648,447,593.30
  5. Step 5: Solve for x
    x = 1,129,648,447,593.30/1,216,645.32
  6. Step 6: Final answer
    x = 928,494.47

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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.