Home / 1,128,824.30-1,557,778.59-645,399.57

Finding the Fourth Proportional to 1,128,824.30, 1,557,778.59 and 645,399.57

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Solution

The fourth proportional to 1,128,824.30, 1,557,778.59 and 645,399.57 is: 890,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,824.30 : 1,557,778.59 = 645,399.57 : x
  2. Step 2: Convert to fraction form
    1,128,824.30/1,557,778.59 = 645,399.57/x
  3. Step 3: Cross multiply
    1,128,824.30x = 1,557,778.59 × 645,399.57
  4. Step 4: Simplify right side
    1,128,824.30x = 1,005,389,621,125.32
  5. Step 5: Solve for x
    x = 1,005,389,621,125.32/1,128,824.30
  6. Step 6: Final answer
    x = 890,652.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.