Home / 1,315,215.20-1,972,822.80-516,231.20

Finding the Fourth Proportional to 1,315,215.20, 1,972,822.80 and 516,231.20

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Solution

The fourth proportional to 1,315,215.20, 1,972,822.80 and 516,231.20 is: 774,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,215.20 : 1,972,822.80 = 516,231.20 : x
  2. Step 2: Convert to fraction form
    1,315,215.20/1,972,822.80 = 516,231.20/x
  3. Step 3: Cross multiply
    1,315,215.20x = 1,972,822.80 × 516,231.20
  4. Step 4: Simplify right side
    1,315,215.20x = 1,018,432,681,431.36
  5. Step 5: Solve for x
    x = 1,018,432,681,431.36/1,315,215.20
  6. Step 6: Final answer
    x = 774,346.80

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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.