Home / 1,128,611.52-1,557,483.06-645,187.32

Finding the Fourth Proportional to 1,128,611.52, 1,557,483.06 and 645,187.32

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Solution

The fourth proportional to 1,128,611.52, 1,557,483.06 and 645,187.32 is: 890,358.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,611.52 : 1,557,483.06 = 645,187.32 : x
  2. Step 2: Convert to fraction form
    1,128,611.52/1,557,483.06 = 645,187.32/x
  3. Step 3: Cross multiply
    1,128,611.52x = 1,557,483.06 × 645,187.32
  4. Step 4: Simplify right side
    1,128,611.52x = 1,004,868,321,426.80
  5. Step 5: Solve for x
    x = 1,004,868,321,426.80/1,128,611.52
  6. Step 6: Final answer
    x = 890,358.02

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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.