Home / 1,121,973.80-1,548,381.86-686,254.56

Finding the Fourth Proportional to 1,121,973.80, 1,548,381.86 and 686,254.56

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Solution

The fourth proportional to 1,121,973.80, 1,548,381.86 and 686,254.56 is: 947,066.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,973.80 : 1,548,381.86 = 686,254.56 : x
  2. Step 2: Convert to fraction form
    1,121,973.80/1,548,381.86 = 686,254.56/x
  3. Step 3: Cross multiply
    1,121,973.80x = 1,548,381.86 × 686,254.56
  4. Step 4: Simplify right side
    1,121,973.80x = 1,062,584,112,046.28
  5. Step 5: Solve for x
    x = 1,062,584,112,046.28/1,121,973.80
  6. Step 6: Final answer
    x = 947,066.78

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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.