Home / 1,261,086.60-1,740,341.52-688,158.21

Finding the Fourth Proportional to 1,261,086.60, 1,740,341.52 and 688,158.21

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Solution

The fourth proportional to 1,261,086.60, 1,740,341.52 and 688,158.21 is: 949,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,086.60 : 1,740,341.52 = 688,158.21 : x
  2. Step 2: Convert to fraction form
    1,261,086.60/1,740,341.52 = 688,158.21/x
  3. Step 3: Cross multiply
    1,261,086.60x = 1,740,341.52 × 688,158.21
  4. Step 4: Simplify right side
    1,261,086.60x = 1,197,630,305,191.88
  5. Step 5: Solve for x
    x = 1,197,630,305,191.88/1,261,086.60
  6. Step 6: Final answer
    x = 949,681.26

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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.