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Finding the Fourth Proportional to 1,721,215.65, 2,375,264.45 and 946,829.81

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Solution

The fourth proportional to 1,721,215.65, 2,375,264.45 and 946,829.81 is: 1,306,617.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,215.65 : 2,375,264.45 = 946,829.81 : x
  2. Step 2: Convert to fraction form
    1,721,215.65/2,375,264.45 = 946,829.81/x
  3. Step 3: Cross multiply
    1,721,215.65x = 2,375,264.45 × 946,829.81
  4. Step 4: Simplify right side
    1,721,215.65x = 2,248,971,196,198.49
  5. Step 5: Solve for x
    x = 2,248,971,196,198.49/1,721,215.65
  6. Step 6: Final answer
    x = 1,306,617.91

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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.