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Finding the Fourth Proportional to 564,532.55, 779,066.49 and 319,517.30

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Solution

The fourth proportional to 564,532.55, 779,066.49 and 319,517.30 is: 440,940.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,532.55 : 779,066.49 = 319,517.30 : x
  2. Step 2: Convert to fraction form
    564,532.55/779,066.49 = 319,517.30/x
  3. Step 3: Cross multiply
    564,532.55x = 779,066.49 × 319,517.30
  4. Step 4: Simplify right side
    564,532.55x = 248,925,221,405.28
  5. Step 5: Solve for x
    x = 248,925,221,405.28/564,532.55
  6. Step 6: Final answer
    x = 440,940.42

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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.