Home / 986,721.40-1,479,644.70-453,968.20

Finding the Fourth Proportional to 986,721.40, 1,479,644.70 and 453,968.20

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Solution

The fourth proportional to 986,721.40, 1,479,644.70 and 453,968.20 is: 680,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,721.40 : 1,479,644.70 = 453,968.20 : x
  2. Step 2: Convert to fraction form
    986,721.40/1,479,644.70 = 453,968.20/x
  3. Step 3: Cross multiply
    986,721.40x = 1,479,644.70 × 453,968.20
  4. Step 4: Simplify right side
    986,721.40x = 671,711,641,098.54
  5. Step 5: Solve for x
    x = 671,711,641,098.54/986,721.40
  6. Step 6: Final answer
    x = 680,751.06

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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.