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Finding the Fourth Proportional to 642,807.78, 887,081.95 and 367,202.13

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Solution

The fourth proportional to 642,807.78, 887,081.95 and 367,202.13 is: 506,743.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,807.78 : 887,081.95 = 367,202.13 : x
  2. Step 2: Convert to fraction form
    642,807.78/887,081.95 = 367,202.13/x
  3. Step 3: Cross multiply
    642,807.78x = 887,081.95 × 367,202.13
  4. Step 4: Simplify right side
    642,807.78x = 325,738,381,524.55
  5. Step 5: Solve for x
    x = 325,738,381,524.55/642,807.78
  6. Step 6: Final answer
    x = 506,743.06

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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.