Home / 1,121,385.42-1,681,875.12-322,470.90

Finding the Fourth Proportional to 1,121,385.42, 1,681,875.12 and 322,470.90

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Solution

The fourth proportional to 1,121,385.42, 1,681,875.12 and 322,470.90 is: 483,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,385.42 : 1,681,875.12 = 322,470.90 : x
  2. Step 2: Convert to fraction form
    1,121,385.42/1,681,875.12 = 322,470.90/x
  3. Step 3: Cross multiply
    1,121,385.42x = 1,681,875.12 × 322,470.90
  4. Step 4: Simplify right side
    1,121,385.42x = 542,355,783,634.01
  5. Step 5: Solve for x
    x = 542,355,783,634.01/1,121,385.42
  6. Step 6: Final answer
    x = 483,647.97

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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.