Home / 1,261,155.20-1,740,431.10-688,232.30

Finding the Fourth Proportional to 1,261,155.20, 1,740,431.10 and 688,232.30

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Solution

The fourth proportional to 1,261,155.20, 1,740,431.10 and 688,232.30 is: 949,780.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,155.20 : 1,740,431.10 = 688,232.30 : x
  2. Step 2: Convert to fraction form
    1,261,155.20/1,740,431.10 = 688,232.30/x
  3. Step 3: Cross multiply
    1,261,155.20x = 1,740,431.10 × 688,232.30
  4. Step 4: Simplify right side
    1,261,155.20x = 1,197,820,898,944.53
  5. Step 5: Solve for x
    x = 1,197,820,898,944.53/1,261,155.20
  6. Step 6: Final answer
    x = 949,780.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.