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Finding the Fourth Proportional to 615,066.80, 922,859.40 and 334,785.20

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Solution

The fourth proportional to 615,066.80, 922,859.40 and 334,785.20 is: 502,318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,066.80 : 922,859.40 = 334,785.20 : x
  2. Step 2: Convert to fraction form
    615,066.80/922,859.40 = 334,785.20/x
  3. Step 3: Cross multiply
    615,066.80x = 922,859.40 × 334,785.20
  4. Step 4: Simplify right side
    615,066.80x = 308,959,668,800.88
  5. Step 5: Solve for x
    x = 308,959,668,800.88/615,066.80
  6. Step 6: Final answer
    x = 502,318.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.