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Finding the Fourth Proportional to 572,115.56, 789,495.54 and 317,451.56

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Solution

The fourth proportional to 572,115.56, 789,495.54 and 317,451.56 is: 438,069.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,115.56 : 789,495.54 = 317,451.56 : x
  2. Step 2: Convert to fraction form
    572,115.56/789,495.54 = 317,451.56/x
  3. Step 3: Cross multiply
    572,115.56x = 789,495.54 × 317,451.56
  4. Step 4: Simplify right side
    572,115.56x = 250,626,590,786.04
  5. Step 5: Solve for x
    x = 250,626,590,786.04/572,115.56
  6. Step 6: Final answer
    x = 438,069.87

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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.