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Finding the Fourth Proportional to 1,281,974.80, 1,922,962.20 and 652,118.80

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Solution

The fourth proportional to 1,281,974.80, 1,922,962.20 and 652,118.80 is: 978,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,974.80 : 1,922,962.20 = 652,118.80 : x
  2. Step 2: Convert to fraction form
    1,281,974.80/1,922,962.20 = 652,118.80/x
  3. Step 3: Cross multiply
    1,281,974.80x = 1,922,962.20 × 652,118.80
  4. Step 4: Simplify right side
    1,281,974.80x = 1,253,999,802,309.36
  5. Step 5: Solve for x
    x = 1,253,999,802,309.36/1,281,974.80
  6. Step 6: Final answer
    x = 978,178.20

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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.