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Finding the Fourth Proportional to 621,667.31, 857,902.20 and 367,034.90

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Solution

The fourth proportional to 621,667.31, 857,902.20 and 367,034.90 is: 506,508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,667.31 : 857,902.20 = 367,034.90 : x
  2. Step 2: Convert to fraction form
    621,667.31/857,902.20 = 367,034.90/x
  3. Step 3: Cross multiply
    621,667.31x = 857,902.20 × 367,034.90
  4. Step 4: Simplify right side
    621,667.31x = 314,880,048,186.78
  5. Step 5: Solve for x
    x = 314,880,048,186.78/621,667.31
  6. Step 6: Final answer
    x = 506,508.94

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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.