Home / 1,320,285.04-1,980,427.59-720,919.24

Finding the Fourth Proportional to 1,320,285.04, 1,980,427.59 and 720,919.24

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Solution

The fourth proportional to 1,320,285.04, 1,980,427.59 and 720,919.24 is: 1,081,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,285.04 : 1,980,427.59 = 720,919.24 : x
  2. Step 2: Convert to fraction form
    1,320,285.04/1,980,427.59 = 720,919.24/x
  3. Step 3: Cross multiply
    1,320,285.04x = 1,980,427.59 × 720,919.24
  4. Step 4: Simplify right side
    1,320,285.04x = 1,427,728,348,106.76
  5. Step 5: Solve for x
    x = 1,427,728,348,106.76/1,320,285.04
  6. Step 6: Final answer
    x = 1,081,378.87

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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.