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Finding the Fourth Proportional to 526,353.47, 789,522.86 and 126,990.89

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Solution

The fourth proportional to 526,353.47, 789,522.86 and 126,990.89 is: 190,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,353.47 : 789,522.86 = 126,990.89 : x
  2. Step 2: Convert to fraction form
    526,353.47/789,522.86 = 126,990.89/x
  3. Step 3: Cross multiply
    526,353.47x = 789,522.86 × 126,990.89
  4. Step 4: Simplify right side
    526,353.47x = 100,262,207,036.61
  5. Step 5: Solve for x
    x = 100,262,207,036.61/526,353.47
  6. Step 6: Final answer
    x = 190,484.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.