Home / 642,201.68-886,267.51-355,721.76

Finding the Fourth Proportional to 642,201.68, 886,267.51 and 355,721.76

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Solution

The fourth proportional to 642,201.68, 886,267.51 and 355,721.76 is: 490,912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,201.68 : 886,267.51 = 355,721.76 : x
  2. Step 2: Convert to fraction form
    642,201.68/886,267.51 = 355,721.76/x
  3. Step 3: Cross multiply
    642,201.68x = 886,267.51 × 355,721.76
  4. Step 4: Simplify right side
    642,201.68x = 315,264,637,598.71
  5. Step 5: Solve for x
    x = 315,264,637,598.71/642,201.68
  6. Step 6: Final answer
    x = 490,912.20

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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.