Home / 642,776.02-886,937.76-356,296.06

Finding the Fourth Proportional to 642,776.02, 886,937.76 and 356,296.06

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Solution

The fourth proportional to 642,776.02, 886,937.76 and 356,296.06 is: 491,636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,776.02 : 886,937.76 = 356,296.06 : x
  2. Step 2: Convert to fraction form
    642,776.02/886,937.76 = 356,296.06/x
  3. Step 3: Cross multiply
    642,776.02x = 886,937.76 × 356,296.06
  4. Step 4: Simplify right side
    642,776.02x = 316,012,429,353.23
  5. Step 5: Solve for x
    x = 316,012,429,353.23/642,776.02
  6. Step 6: Final answer
    x = 491,636.93

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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.