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Finding the Fourth Proportional to 615,507.15, 849,396.62 and 357,447.55

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Solution

The fourth proportional to 615,507.15, 849,396.62 and 357,447.55 is: 493,275.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,507.15 : 849,396.62 = 357,447.55 : x
  2. Step 2: Convert to fraction form
    615,507.15/849,396.62 = 357,447.55/x
  3. Step 3: Cross multiply
    615,507.15x = 849,396.62 × 357,447.55
  4. Step 4: Simplify right side
    615,507.15x = 303,614,740,797.28
  5. Step 5: Solve for x
    x = 303,614,740,797.28/615,507.15
  6. Step 6: Final answer
    x = 493,275.73

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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.