Home / 1,218,385.52-1,681,308.08-666,995.52

Finding the Fourth Proportional to 1,218,385.52, 1,681,308.08 and 666,995.52

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Solution

The fourth proportional to 1,218,385.52, 1,681,308.08 and 666,995.52 is: 920,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,385.52 : 1,681,308.08 = 666,995.52 : x
  2. Step 2: Convert to fraction form
    1,218,385.52/1,681,308.08 = 666,995.52/x
  3. Step 3: Cross multiply
    1,218,385.52x = 1,681,308.08 × 666,995.52
  4. Step 4: Simplify right side
    1,218,385.52x = 1,121,424,957,099.80
  5. Step 5: Solve for x
    x = 1,121,424,957,099.80/1,218,385.52
  6. Step 6: Final answer
    x = 920,418.82

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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.