Home / 588,470.15-811,879.92-384,638.78

Finding the Fourth Proportional to 588,470.15, 811,879.92 and 384,638.78

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Solution

The fourth proportional to 588,470.15, 811,879.92 and 384,638.78 is: 530,664.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    588,470.15 : 811,879.92 = 384,638.78 : x
  2. Step 2: Convert to fraction form
    588,470.15/811,879.92 = 384,638.78/x
  3. Step 3: Cross multiply
    588,470.15x = 811,879.92 × 384,638.78
  4. Step 4: Simplify right side
    588,470.15x = 312,280,497,875.90
  5. Step 5: Solve for x
    x = 312,280,497,875.90/588,470.15
  6. Step 6: Final answer
    x = 530,664.98

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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.