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Finding the Fourth Proportional to 658,114.64, 908,199.88 and 356,309.20

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Solution

The fourth proportional to 658,114.64, 908,199.88 and 356,309.20 is: 491,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,114.64 : 908,199.88 = 356,309.20 : x
  2. Step 2: Convert to fraction form
    658,114.64/908,199.88 = 356,309.20/x
  3. Step 3: Cross multiply
    658,114.64x = 908,199.88 × 356,309.20
  4. Step 4: Simplify right side
    658,114.64x = 323,599,972,682.90
  5. Step 5: Solve for x
    x = 323,599,972,682.90/658,114.64
  6. Step 6: Final answer
    x = 491,707.60

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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.