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Finding the Fourth Proportional to 432,821.20, 648,454.20 and 370,613.20

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Solution

The fourth proportional to 432,821.20, 648,454.20 and 370,613.20 is: 555,253.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,821.20 : 648,454.20 = 370,613.20 : x
  2. Step 2: Convert to fraction form
    432,821.20/648,454.20 = 370,613.20/x
  3. Step 3: Cross multiply
    432,821.20x = 648,454.20 × 370,613.20
  4. Step 4: Simplify right side
    432,821.20x = 240,325,686,115.44
  5. Step 5: Solve for x
    x = 240,325,686,115.44/432,821.20
  6. Step 6: Final answer
    x = 555,253.96

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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.