Home / 2,813,206.40-4,219,809.60-920,139.20

Finding the Fourth Proportional to 2,813,206.40, 4,219,809.60 and 920,139.20

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Solution

The fourth proportional to 2,813,206.40, 4,219,809.60 and 920,139.20 is: 1,380,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813,206.40 : 4,219,809.60 = 920,139.20 : x
  2. Step 2: Convert to fraction form
    2,813,206.40/4,219,809.60 = 920,139.20/x
  3. Step 3: Cross multiply
    2,813,206.40x = 4,219,809.60 × 920,139.20
  4. Step 4: Simplify right side
    2,813,206.40x = 3,882,812,229,496.32
  5. Step 5: Solve for x
    x = 3,882,812,229,496.32/2,813,206.40
  6. Step 6: Final answer
    x = 1,380,208.80

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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.