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Finding the Fourth Proportional to 488,431.20, 732,646.80 and 446,440.80

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Solution

The fourth proportional to 488,431.20, 732,646.80 and 446,440.80 is: 669,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,431.20 : 732,646.80 = 446,440.80 : x
  2. Step 2: Convert to fraction form
    488,431.20/732,646.80 = 446,440.80/x
  3. Step 3: Cross multiply
    488,431.20x = 732,646.80 × 446,440.80
  4. Step 4: Simplify right side
    488,431.20x = 327,083,423,509.44
  5. Step 5: Solve for x
    x = 327,083,423,509.44/488,431.20
  6. Step 6: Final answer
    x = 669,661.20

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Similar ratio
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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.