Home / 879,983.80-1,319,975.70-520,732.60

Finding the Fourth Proportional to 879,983.80, 1,319,975.70 and 520,732.60

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Solution

The fourth proportional to 879,983.80, 1,319,975.70 and 520,732.60 is: 781,098.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,983.80 : 1,319,975.70 = 520,732.60 : x
  2. Step 2: Convert to fraction form
    879,983.80/1,319,975.70 = 520,732.60/x
  3. Step 3: Cross multiply
    879,983.80x = 1,319,975.70 × 520,732.60
  4. Step 4: Simplify right side
    879,983.80x = 687,354,378,197.82
  5. Step 5: Solve for x
    x = 687,354,378,197.82/879,983.80
  6. Step 6: Final answer
    x = 781,098.90

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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.