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Finding the Fourth Proportional to 1,721,318.40, 2,375,477.28 and 946,982.88

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Solution

The fourth proportional to 1,721,318.40, 2,375,477.28 and 946,982.88 is: 1,306,868.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,318.40 : 2,375,477.28 = 946,982.88 : x
  2. Step 2: Convert to fraction form
    1,721,318.40/2,375,477.28 = 946,982.88/x
  3. Step 3: Cross multiply
    1,721,318.40x = 2,375,477.28 × 946,982.88
  4. Step 4: Simplify right side
    1,721,318.40x = 2,249,536,315,988.97
  5. Step 5: Solve for x
    x = 2,249,536,315,988.97/1,721,318.40
  6. Step 6: Final answer
    x = 1,306,868.22

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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.