Home / 1,121,123.58-1,680,685.41-410,985.87

Finding the Fourth Proportional to 1,121,123.58, 1,680,685.41 and 410,985.87

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Solution

The fourth proportional to 1,121,123.58, 1,680,685.41 and 410,985.87 is: 616,112.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,123.58 : 1,680,685.41 = 410,985.87 : x
  2. Step 2: Convert to fraction form
    1,121,123.58/1,680,685.41 = 410,985.87/x
  3. Step 3: Cross multiply
    1,121,123.58x = 1,680,685.41 × 410,985.87
  4. Step 4: Simplify right side
    1,121,123.58x = 690,737,955,425.16
  5. Step 5: Solve for x
    x = 690,737,955,425.16/1,121,123.58
  6. Step 6: Final answer
    x = 616,112.24

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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.