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Finding the Fourth Proportional to 564,990.12, 779,360.67 and 338,504.40

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Solution

The fourth proportional to 564,990.12, 779,360.67 and 338,504.40 is: 466,940.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,990.12 : 779,360.67 = 338,504.40 : x
  2. Step 2: Convert to fraction form
    564,990.12/779,360.67 = 338,504.40/x
  3. Step 3: Cross multiply
    564,990.12x = 779,360.67 × 338,504.40
  4. Step 4: Simplify right side
    564,990.12x = 263,817,015,981.95
  5. Step 5: Solve for x
    x = 263,817,015,981.95/564,990.12
  6. Step 6: Final answer
    x = 466,940.94

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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.