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Finding the Fourth Proportional to 1,694,985.60, 2,540,404.80 and 747,350.40

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Solution

The fourth proportional to 1,694,985.60, 2,540,404.80 and 747,350.40 is: 1,120,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,694,985.60 : 2,540,404.80 = 747,350.40 : x
  2. Step 2: Convert to fraction form
    1,694,985.60/2,540,404.80 = 747,350.40/x
  3. Step 3: Cross multiply
    1,694,985.60x = 2,540,404.80 × 747,350.40
  4. Step 4: Simplify right side
    1,694,985.60x = 1,898,572,543,441.92
  5. Step 5: Solve for x
    x = 1,898,572,543,441.92/1,694,985.60
  6. Step 6: Final answer
    x = 1,120,111.31

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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.