Home / 1,315,279.80-1,972,919.70-318,007.80

Finding the Fourth Proportional to 1,315,279.80, 1,972,919.70 and 318,007.80

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Solution

The fourth proportional to 1,315,279.80, 1,972,919.70 and 318,007.80 is: 477,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,279.80 : 1,972,919.70 = 318,007.80 : x
  2. Step 2: Convert to fraction form
    1,315,279.80/1,972,919.70 = 318,007.80/x
  3. Step 3: Cross multiply
    1,315,279.80x = 1,972,919.70 × 318,007.80
  4. Step 4: Simplify right side
    1,315,279.80x = 627,403,853,373.66
  5. Step 5: Solve for x
    x = 627,403,853,373.66/1,315,279.80
  6. Step 6: Final answer
    x = 477,011.70

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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.