Home / 1,123,648.88-1,550,255.64-639,870.98

Finding the Fourth Proportional to 1,123,648.88, 1,550,255.64 and 639,870.98

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Solution

The fourth proportional to 1,123,648.88, 1,550,255.64 and 639,870.98 is: 882,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,648.88 : 1,550,255.64 = 639,870.98 : x
  2. Step 2: Convert to fraction form
    1,123,648.88/1,550,255.64 = 639,870.98/x
  3. Step 3: Cross multiply
    1,123,648.88x = 1,550,255.64 × 639,870.98
  4. Step 4: Simplify right side
    1,123,648.88x = 991,963,595,617.33
  5. Step 5: Solve for x
    x = 991,963,595,617.33/1,123,648.88
  6. Step 6: Final answer
    x = 882,805.66

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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.