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Finding the Fourth Proportional to 572,089.94, 789,481.56 and 317,440.52

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Solution

The fourth proportional to 572,089.94, 789,481.56 and 317,440.52 is: 438,066.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,089.94 : 789,481.56 = 317,440.52 : x
  2. Step 2: Convert to fraction form
    572,089.94/789,481.56 = 317,440.52/x
  3. Step 3: Cross multiply
    572,089.94x = 789,481.56 × 317,440.52
  4. Step 4: Simplify right side
    572,089.94x = 250,613,436,936.81
  5. Step 5: Solve for x
    x = 250,613,436,936.81/572,089.94
  6. Step 6: Final answer
    x = 438,066.50

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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.