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Finding the Fourth Proportional to 2,985,224.80, 4,472,912.40 and 1,720,847.20

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Solution

The fourth proportional to 2,985,224.80, 4,472,912.40 and 1,720,847.20 is: 2,578,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985,224.80 : 4,472,912.40 = 1,720,847.20 : x
  2. Step 2: Convert to fraction form
    2,985,224.80/4,472,912.40 = 1,720,847.20/x
  3. Step 3: Cross multiply
    2,985,224.80x = 4,472,912.40 × 1,720,847.20
  4. Step 4: Simplify right side
    2,985,224.80x = 7,697,198,779,385.28
  5. Step 5: Solve for x
    x = 7,697,198,779,385.28/2,985,224.80
  6. Step 6: Final answer
    x = 2,578,431.88

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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.