Home / 1,279,688.60-1,920,195.30-522,085.40

Finding the Fourth Proportional to 1,279,688.60, 1,920,195.30 and 522,085.40

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Solution

The fourth proportional to 1,279,688.60, 1,920,195.30 and 522,085.40 is: 783,398.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,688.60 : 1,920,195.30 = 522,085.40 : x
  2. Step 2: Convert to fraction form
    1,279,688.60/1,920,195.30 = 522,085.40/x
  3. Step 3: Cross multiply
    1,279,688.60x = 1,920,195.30 × 522,085.40
  4. Step 4: Simplify right side
    1,279,688.60x = 1,002,505,931,278.62
  5. Step 5: Solve for x
    x = 1,002,505,931,278.62/1,279,688.60
  6. Step 6: Final answer
    x = 783,398.34

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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.