Home / 642,760.30-886,946.52-356,274.24

Finding the Fourth Proportional to 642,760.30, 886,946.52 and 356,274.24

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Solution

The fourth proportional to 642,760.30, 886,946.52 and 356,274.24 is: 491,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,760.30 : 886,946.52 = 356,274.24 : x
  2. Step 2: Convert to fraction form
    642,760.30/886,946.52 = 356,274.24/x
  3. Step 3: Cross multiply
    642,760.30x = 886,946.52 × 356,274.24
  4. Step 4: Simplify right side
    642,760.30x = 315,996,197,333.65
  5. Step 5: Solve for x
    x = 315,996,197,333.65/642,760.30
  6. Step 6: Final answer
    x = 491,623.70

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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.