Home / 465,275.34-642,063.78-284,290.20

Finding the Fourth Proportional to 465,275.34, 642,063.78 and 284,290.20

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Solution

The fourth proportional to 465,275.34, 642,063.78 and 284,290.20 is: 392,310.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,275.34 : 642,063.78 = 284,290.20 : x
  2. Step 2: Convert to fraction form
    465,275.34/642,063.78 = 284,290.20/x
  3. Step 3: Cross multiply
    465,275.34x = 642,063.78 × 284,290.20
  4. Step 4: Simplify right side
    465,275.34x = 182,532,440,428.96
  5. Step 5: Solve for x
    x = 182,532,440,428.96/465,275.34
  6. Step 6: Final answer
    x = 392,310.58

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1.5x scale

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.