Home / 687,882.17-1,031,280.56-434,628.85

Finding the Fourth Proportional to 687,882.17, 1,031,280.56 and 434,628.85

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Solution

The fourth proportional to 687,882.17, 1,031,280.56 and 434,628.85 is: 651,600.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,882.17 : 1,031,280.56 = 434,628.85 : x
  2. Step 2: Convert to fraction form
    687,882.17/1,031,280.56 = 434,628.85/x
  3. Step 3: Cross multiply
    687,882.17x = 1,031,280.56 × 434,628.85
  4. Step 4: Simplify right side
    687,882.17x = 448,224,283,820.16
  5. Step 5: Solve for x
    x = 448,224,283,820.16/687,882.17
  6. Step 6: Final answer
    x = 651,600.38

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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.