Home / 1,218,721.34-1,681,834.38-674,857.10

Finding the Fourth Proportional to 1,218,721.34, 1,681,834.38 and 674,857.10

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Solution

The fourth proportional to 1,218,721.34, 1,681,834.38 and 674,857.10 is: 931,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,721.34 : 1,681,834.38 = 674,857.10 : x
  2. Step 2: Convert to fraction form
    1,218,721.34/1,681,834.38 = 674,857.10/x
  3. Step 3: Cross multiply
    1,218,721.34x = 1,681,834.38 × 674,857.10
  4. Step 4: Simplify right side
    1,218,721.34x = 1,134,997,863,957.93
  5. Step 5: Solve for x
    x = 1,134,997,863,957.93/1,218,721.34
  6. Step 6: Final answer
    x = 931,302.20

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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.