Home / 1,128,478.32-1,557,299.83-645,053.87

Finding the Fourth Proportional to 1,128,478.32, 1,557,299.83 and 645,053.87

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Solution

The fourth proportional to 1,128,478.32, 1,557,299.83 and 645,053.87 is: 890,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,478.32 : 1,557,299.83 = 645,053.87 : x
  2. Step 2: Convert to fraction form
    1,128,478.32/1,557,299.83 = 645,053.87/x
  3. Step 3: Cross multiply
    1,128,478.32x = 1,557,299.83 × 645,053.87
  4. Step 4: Simplify right side
    1,128,478.32x = 1,004,542,282,091.84
  5. Step 5: Solve for x
    x = 1,004,542,282,091.84/1,128,478.32
  6. Step 6: Final answer
    x = 890,174.20

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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.