Home / 578,320.56-865,915.92-409,143.96

Finding the Fourth Proportional to 578,320.56, 865,915.92 and 409,143.96

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Solution

The fourth proportional to 578,320.56, 865,915.92 and 409,143.96 is: 612,608.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,320.56 : 865,915.92 = 409,143.96 : x
  2. Step 2: Convert to fraction form
    578,320.56/865,915.92 = 409,143.96/x
  3. Step 3: Cross multiply
    578,320.56x = 865,915.92 × 409,143.96
  4. Step 4: Simplify right side
    578,320.56x = 354,284,268,535.84
  5. Step 5: Solve for x
    x = 354,284,268,535.84/578,320.56
  6. Step 6: Final answer
    x = 612,608.81

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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.