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Finding the Fourth Proportional to 525,387.67, 725,052.77 and 310,711.75

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Solution

The fourth proportional to 525,387.67, 725,052.77 and 310,711.75 is: 428,792.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,387.67 : 725,052.77 = 310,711.75 : x
  2. Step 2: Convert to fraction form
    525,387.67/725,052.77 = 310,711.75/x
  3. Step 3: Cross multiply
    525,387.67x = 725,052.77 × 310,711.75
  4. Step 4: Simplify right side
    525,387.67x = 225,282,412,808.03
  5. Step 5: Solve for x
    x = 225,282,412,808.03/525,387.67
  6. Step 6: Final answer
    x = 428,792.73

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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.