Home / 1,216,347.85-1,678,487.79-672,451.12

Finding the Fourth Proportional to 1,216,347.85, 1,678,487.79 and 672,451.12

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Solution

The fourth proportional to 1,216,347.85, 1,678,487.79 and 672,451.12 is: 927,942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,347.85 : 1,678,487.79 = 672,451.12 : x
  2. Step 2: Convert to fraction form
    1,216,347.85/1,678,487.79 = 672,451.12/x
  3. Step 3: Cross multiply
    1,216,347.85x = 1,678,487.79 × 672,451.12
  4. Step 4: Simplify right side
    1,216,347.85x = 1,128,700,994,291.82
  5. Step 5: Solve for x
    x = 1,128,700,994,291.82/1,216,347.85
  6. Step 6: Final answer
    x = 927,942.61

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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.