Home / 1,260,903.20-1,739,982.48-687,938.72

Finding the Fourth Proportional to 1,260,903.20, 1,739,982.48 and 687,938.72

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Solution

The fourth proportional to 1,260,903.20, 1,739,982.48 and 687,938.72 is: 949,320.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,903.20 : 1,739,982.48 = 687,938.72 : x
  2. Step 2: Convert to fraction form
    1,260,903.20/1,739,982.48 = 687,938.72/x
  3. Step 3: Cross multiply
    1,260,903.20x = 1,739,982.48 × 687,938.72
  4. Step 4: Simplify right side
    1,260,903.20x = 1,197,001,320,113.63
  5. Step 5: Solve for x
    x = 1,197,001,320,113.63/1,260,903.20
  6. Step 6: Final answer
    x = 949,320.55

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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.