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Finding the Fourth Proportional to 570,318.84, 787,122.90 and 328,554.36

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Solution

The fourth proportional to 570,318.84, 787,122.90 and 328,554.36 is: 453,452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,318.84 : 787,122.90 = 328,554.36 : x
  2. Step 2: Convert to fraction form
    570,318.84/787,122.90 = 328,554.36/x
  3. Step 3: Cross multiply
    570,318.84x = 787,122.90 × 328,554.36
  4. Step 4: Simplify right side
    570,318.84x = 258,612,660,650.84
  5. Step 5: Solve for x
    x = 258,612,660,650.84/570,318.84
  6. Step 6: Final answer
    x = 453,452.78

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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.