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Finding the Fourth Proportional to 615,745.56, 849,870.54 and 361,178.76

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Solution

The fourth proportional to 615,745.56, 849,870.54 and 361,178.76 is: 498,509.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,745.56 : 849,870.54 = 361,178.76 : x
  2. Step 2: Convert to fraction form
    615,745.56/849,870.54 = 361,178.76/x
  3. Step 3: Cross multiply
    615,745.56x = 849,870.54 × 361,178.76
  4. Step 4: Simplify right side
    615,745.56x = 306,955,187,797.73
  5. Step 5: Solve for x
    x = 306,955,187,797.73/615,745.56
  6. Step 6: Final answer
    x = 498,509.79

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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.