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Finding the Fourth Proportional to 615,505.65, 849,394.55 and 357,446.05

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Solution

The fourth proportional to 615,505.65, 849,394.55 and 357,446.05 is: 493,273.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,505.65 : 849,394.55 = 357,446.05 : x
  2. Step 2: Convert to fraction form
    615,505.65/849,394.55 = 357,446.05/x
  3. Step 3: Cross multiply
    615,505.65x = 849,394.55 × 357,446.05
  4. Step 4: Simplify right side
    615,505.65x = 303,612,726,789.03
  5. Step 5: Solve for x
    x = 303,612,726,789.03/615,505.65
  6. Step 6: Final answer
    x = 493,273.66

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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.