Home / 820,679.52-1,231,089.75-288,154.74

Finding the Fourth Proportional to 820,679.52, 1,231,089.75 and 288,154.74

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Solution

The fourth proportional to 820,679.52, 1,231,089.75 and 288,154.74 is: 432,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,679.52 : 1,231,089.75 = 288,154.74 : x
  2. Step 2: Convert to fraction form
    820,679.52/1,231,089.75 = 288,154.74/x
  3. Step 3: Cross multiply
    820,679.52x = 1,231,089.75 × 288,154.74
  4. Step 4: Simplify right side
    820,679.52x = 354,744,346,827.92
  5. Step 5: Solve for x
    x = 354,744,346,827.92/820,679.52
  6. Step 6: Final answer
    x = 432,256.85

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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.