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Finding the Fourth Proportional to 993,964.80, 1,490,947.20 and 362,899.20

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Solution

The fourth proportional to 993,964.80, 1,490,947.20 and 362,899.20 is: 544,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,964.80 : 1,490,947.20 = 362,899.20 : x
  2. Step 2: Convert to fraction form
    993,964.80/1,490,947.20 = 362,899.20/x
  3. Step 3: Cross multiply
    993,964.80x = 1,490,947.20 × 362,899.20
  4. Step 4: Simplify right side
    993,964.80x = 541,063,546,122.24
  5. Step 5: Solve for x
    x = 541,063,546,122.24/993,964.80
  6. Step 6: Final answer
    x = 544,348.80

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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.