Home / 1,326,643.20-1,989,964.80-1,238,069.70

Finding the Fourth Proportional to 1,326,643.20, 1,989,964.80 and 1,238,069.70

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Solution

The fourth proportional to 1,326,643.20, 1,989,964.80 and 1,238,069.70 is: 1,857,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,643.20 : 1,989,964.80 = 1,238,069.70 : x
  2. Step 2: Convert to fraction form
    1,326,643.20/1,989,964.80 = 1,238,069.70/x
  3. Step 3: Cross multiply
    1,326,643.20x = 1,989,964.80 × 1,238,069.70
  4. Step 4: Simplify right side
    1,326,643.20x = 2,463,715,122,946.56
  5. Step 5: Solve for x
    x = 2,463,715,122,946.56/1,326,643.20
  6. Step 6: Final answer
    x = 1,857,104.55

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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.