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Finding the Fourth Proportional to 799,988.80, 1,196,872.80 and 520,052.80

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Solution

The fourth proportional to 799,988.80, 1,196,872.80 and 520,052.80 is: 778,057.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    799,988.80 : 1,196,872.80 = 520,052.80 : x
  2. Step 2: Convert to fraction form
    799,988.80/1,196,872.80 = 520,052.80/x
  3. Step 3: Cross multiply
    799,988.80x = 1,196,872.80 × 520,052.80
  4. Step 4: Simplify right side
    799,988.80x = 622,437,050,883.84
  5. Step 5: Solve for x
    x = 622,437,050,883.84/799,988.80
  6. Step 6: Final answer
    x = 778,057.21

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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.