Home / 587,583.50-811,113.30-396,855.20

Finding the Fourth Proportional to 587,583.50, 811,113.30 and 396,855.20

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Solution

The fourth proportional to 587,583.50, 811,113.30 and 396,855.20 is: 547,827.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,583.50 : 811,113.30 = 396,855.20 : x
  2. Step 2: Convert to fraction form
    587,583.50/811,113.30 = 396,855.20/x
  3. Step 3: Cross multiply
    587,583.50x = 811,113.30 × 396,855.20
  4. Step 4: Simplify right side
    587,583.50x = 321,894,530,894.16
  5. Step 5: Solve for x
    x = 321,894,530,894.16/587,583.50
  6. Step 6: Final answer
    x = 547,827.72

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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.