Home / 1,315,947.20-1,973,920.80-1,221,468.80

Finding the Fourth Proportional to 1,315,947.20, 1,973,920.80 and 1,221,468.80

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Solution

The fourth proportional to 1,315,947.20, 1,973,920.80 and 1,221,468.80 is: 1,832,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,947.20 : 1,973,920.80 = 1,221,468.80 : x
  2. Step 2: Convert to fraction form
    1,315,947.20/1,973,920.80 = 1,221,468.80/x
  3. Step 3: Cross multiply
    1,315,947.20x = 1,973,920.80 × 1,221,468.80
  4. Step 4: Simplify right side
    1,315,947.20x = 2,411,082,670,871.04
  5. Step 5: Solve for x
    x = 2,411,082,670,871.04/1,315,947.20
  6. Step 6: Final answer
    x = 1,832,203.20

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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.