Home / 1,128,259.71-1,692,638.73-418,287.78

Finding the Fourth Proportional to 1,128,259.71, 1,692,638.73 and 418,287.78

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Solution

The fourth proportional to 1,128,259.71, 1,692,638.73 and 418,287.78 is: 627,524.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,259.71 : 1,692,638.73 = 418,287.78 : x
  2. Step 2: Convert to fraction form
    1,128,259.71/1,692,638.73 = 418,287.78/x
  3. Step 3: Cross multiply
    1,128,259.71x = 1,692,638.73 × 418,287.78
  4. Step 4: Simplify right side
    1,128,259.71x = 708,010,096,713.72
  5. Step 5: Solve for x
    x = 708,010,096,713.72/1,128,259.71
  6. Step 6: Final answer
    x = 627,524.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.