Home / 687,638.26-1,031,434.47-282,816.46

Finding the Fourth Proportional to 687,638.26, 1,031,434.47 and 282,816.46

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Solution

The fourth proportional to 687,638.26, 1,031,434.47 and 282,816.46 is: 424,215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,638.26 : 1,031,434.47 = 282,816.46 : x
  2. Step 2: Convert to fraction form
    687,638.26/1,031,434.47 = 282,816.46/x
  3. Step 3: Cross multiply
    687,638.26x = 1,031,434.47 × 282,816.46
  4. Step 4: Simplify right side
    687,638.26x = 291,706,645,527.38
  5. Step 5: Solve for x
    x = 291,706,645,527.38/687,638.26
  6. Step 6: Final answer
    x = 424,215.26

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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.