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Finding the Fourth Proportional to 572,026.32, 789,393.79 and 317,376.90

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Solution

The fourth proportional to 572,026.32, 789,393.79 and 317,376.90 is: 437,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,026.32 : 789,393.79 = 317,376.90 : x
  2. Step 2: Convert to fraction form
    572,026.32/789,393.79 = 317,376.90/x
  3. Step 3: Cross multiply
    572,026.32x = 789,393.79 × 317,376.90
  4. Step 4: Simplify right side
    572,026.32x = 250,535,348,415.60
  5. Step 5: Solve for x
    x = 250,535,348,415.60/572,026.32
  6. Step 6: Final answer
    x = 437,978.71

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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.