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Finding the Fourth Proportional to 488,000.40, 732,000.60 and 320,578.80

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Solution

The fourth proportional to 488,000.40, 732,000.60 and 320,578.80 is: 480,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,000.40 : 732,000.60 = 320,578.80 : x
  2. Step 2: Convert to fraction form
    488,000.40/732,000.60 = 320,578.80/x
  3. Step 3: Cross multiply
    488,000.40x = 732,000.60 × 320,578.80
  4. Step 4: Simplify right side
    488,000.40x = 234,663,873,947.28
  5. Step 5: Solve for x
    x = 234,663,873,947.28/488,000.40
  6. Step 6: Final answer
    x = 480,868.20

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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.