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Finding the Fourth Proportional to 519,794.88, 779,680.80 and 145,808.16

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Solution

The fourth proportional to 519,794.88, 779,680.80 and 145,808.16 is: 218,709.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,794.88 : 779,680.80 = 145,808.16 : x
  2. Step 2: Convert to fraction form
    519,794.88/779,680.80 = 145,808.16/x
  3. Step 3: Cross multiply
    519,794.88x = 779,680.80 × 145,808.16
  4. Step 4: Simplify right side
    519,794.88x = 113,683,822,835.33
  5. Step 5: Solve for x
    x = 113,683,822,835.33/519,794.88
  6. Step 6: Final answer
    x = 218,709.01

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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.