Home / 787,000.20-1,180,500.30-488,401.80

Finding the Fourth Proportional to 787,000.20, 1,180,500.30 and 488,401.80

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Solution

The fourth proportional to 787,000.20, 1,180,500.30 and 488,401.80 is: 732,602.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,000.20 : 1,180,500.30 = 488,401.80 : x
  2. Step 2: Convert to fraction form
    787,000.20/1,180,500.30 = 488,401.80/x
  3. Step 3: Cross multiply
    787,000.20x = 1,180,500.30 × 488,401.80
  4. Step 4: Simplify right side
    787,000.20x = 576,558,471,420.54
  5. Step 5: Solve for x
    x = 576,558,471,420.54/787,000.20
  6. Step 6: Final answer
    x = 732,602.70

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1.5x scale

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.