Home / 1,221,815.20-1,832,895.60-380,279.20

Finding the Fourth Proportional to 1,221,815.20, 1,832,895.60 and 380,279.20

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Solution

The fourth proportional to 1,221,815.20, 1,832,895.60 and 380,279.20 is: 570,472.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,815.20 : 1,832,895.60 = 380,279.20 : x
  2. Step 2: Convert to fraction form
    1,221,815.20/1,832,895.60 = 380,279.20/x
  3. Step 3: Cross multiply
    1,221,815.20x = 1,832,895.60 × 380,279.20
  4. Step 4: Simplify right side
    1,221,815.20x = 697,012,072,451.52
  5. Step 5: Solve for x
    x = 697,012,072,451.52/1,221,815.20
  6. Step 6: Final answer
    x = 570,472.58

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1.5x scale

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.