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Finding the Fourth Proportional to 615,471.88, 849,380.53 and 347,199.88

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Solution

The fourth proportional to 615,471.88, 849,380.53 and 347,199.88 is: 479,152.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,471.88 : 849,380.53 = 347,199.88 : x
  2. Step 2: Convert to fraction form
    615,471.88/849,380.53 = 347,199.88/x
  3. Step 3: Cross multiply
    615,471.88x = 849,380.53 × 347,199.88
  4. Step 4: Simplify right side
    615,471.88x = 294,904,812,975.43
  5. Step 5: Solve for x
    x = 294,904,812,975.43/615,471.88
  6. Step 6: Final answer
    x = 479,152.38

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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.