Home / 1,317,619.80-1,976,429.70-1,223,141.40

Finding the Fourth Proportional to 1,317,619.80, 1,976,429.70 and 1,223,141.40

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Solution

The fourth proportional to 1,317,619.80, 1,976,429.70 and 1,223,141.40 is: 1,834,712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,619.80 : 1,976,429.70 = 1,223,141.40 : x
  2. Step 2: Convert to fraction form
    1,317,619.80/1,976,429.70 = 1,223,141.40/x
  3. Step 3: Cross multiply
    1,317,619.80x = 1,976,429.70 × 1,223,141.40
  4. Step 4: Simplify right side
    1,317,619.80x = 2,417,452,990,259.58
  5. Step 5: Solve for x
    x = 2,417,452,990,259.58/1,317,619.80
  6. Step 6: Final answer
    x = 1,834,712.10

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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.