Home / 1,261,155.60-1,740,380.40-688,205.52

Finding the Fourth Proportional to 1,261,155.60, 1,740,380.40 and 688,205.52

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Solution

The fourth proportional to 1,261,155.60, 1,740,380.40 and 688,205.52 is: 949,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,155.60 : 1,740,380.40 = 688,205.52 : x
  2. Step 2: Convert to fraction form
    1,261,155.60/1,740,380.40 = 688,205.52/x
  3. Step 3: Cross multiply
    1,261,155.60x = 1,740,380.40 × 688,205.52
  4. Step 4: Simplify right side
    1,261,155.60x = 1,197,739,398,179.81
  5. Step 5: Solve for x
    x = 1,197,739,398,179.81/1,261,155.60
  6. Step 6: Final answer
    x = 949,715.80

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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.