Home / 1,261,105.60-1,740,311.20-688,155.20

Finding the Fourth Proportional to 1,261,105.60, 1,740,311.20 and 688,155.20

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Solution

The fourth proportional to 1,261,105.60, 1,740,311.20 and 688,155.20 is: 949,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,105.60 : 1,740,311.20 = 688,155.20 : x
  2. Step 2: Convert to fraction form
    1,261,105.60/1,740,311.20 = 688,155.20/x
  3. Step 3: Cross multiply
    1,261,105.60x = 1,740,311.20 × 688,155.20
  4. Step 4: Simplify right side
    1,261,105.60x = 1,197,604,201,898.24
  5. Step 5: Solve for x
    x = 1,197,604,201,898.24/1,261,105.60
  6. Step 6: Final answer
    x = 949,646.25

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1.5x scale

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.