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Finding the Fourth Proportional to 572,257.72, 789,700.62 and 317,602.36

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Solution

The fourth proportional to 572,257.72, 789,700.62 and 317,602.36 is: 438,282.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,257.72 : 789,700.62 = 317,602.36 : x
  2. Step 2: Convert to fraction form
    572,257.72/789,700.62 = 317,602.36/x
  3. Step 3: Cross multiply
    572,257.72x = 789,700.62 × 317,602.36
  4. Step 4: Simplify right side
    572,257.72x = 250,810,780,605.46
  5. Step 5: Solve for x
    x = 250,810,780,605.46/572,257.72
  6. Step 6: Final answer
    x = 438,282.91

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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.