Home / 1,389,070.80-2,083,721.40-442,414.80

Finding the Fourth Proportional to 1,389,070.80, 2,083,721.40 and 442,414.80

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Solution

The fourth proportional to 1,389,070.80, 2,083,721.40 and 442,414.80 is: 663,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,070.80 : 2,083,721.40 = 442,414.80 : x
  2. Step 2: Convert to fraction form
    1,389,070.80/2,083,721.40 = 442,414.80/x
  3. Step 3: Cross multiply
    1,389,070.80x = 2,083,721.40 × 442,414.80
  4. Step 4: Simplify right side
    1,389,070.80x = 921,869,186,436.72
  5. Step 5: Solve for x
    x = 921,869,186,436.72/1,389,070.80
  6. Step 6: Final answer
    x = 663,658.89

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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.