Home / 478,520.20-717,434.70-268,222.60

Finding the Fourth Proportional to 478,520.20, 717,434.70 and 268,222.60

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Solution

The fourth proportional to 478,520.20, 717,434.70 and 268,222.60 is: 402,140.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,520.20 : 717,434.70 = 268,222.60 : x
  2. Step 2: Convert to fraction form
    478,520.20/717,434.70 = 268,222.60/x
  3. Step 3: Cross multiply
    478,520.20x = 717,434.70 × 268,222.60
  4. Step 4: Simplify right side
    478,520.20x = 192,432,200,564.22
  5. Step 5: Solve for x
    x = 192,432,200,564.22/478,520.20
  6. Step 6: Final answer
    x = 402,140.18

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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.