Home / 1,128,725.46-1,557,560.26-645,310.98

Finding the Fourth Proportional to 1,128,725.46, 1,557,560.26 and 645,310.98

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Solution

The fourth proportional to 1,128,725.46, 1,557,560.26 and 645,310.98 is: 890,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,725.46 : 1,557,560.26 = 645,310.98 : x
  2. Step 2: Convert to fraction form
    1,128,725.46/1,557,560.26 = 645,310.98/x
  3. Step 3: Cross multiply
    1,128,725.46x = 1,557,560.26 × 645,310.98
  4. Step 4: Simplify right side
    1,128,725.46x = 1,005,110,728,388.58
  5. Step 5: Solve for x
    x = 1,005,110,728,388.58/1,128,725.46
  6. Step 6: Final answer
    x = 890,482.91

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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.