Home / 1,128,453.72-1,557,265.96-645,029.24

Finding the Fourth Proportional to 1,128,453.72, 1,557,265.96 and 645,029.24

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Solution

The fourth proportional to 1,128,453.72, 1,557,265.96 and 645,029.24 is: 890,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,453.72 : 1,557,265.96 = 645,029.24 : x
  2. Step 2: Convert to fraction form
    1,128,453.72/1,557,265.96 = 645,029.24/x
  3. Step 3: Cross multiply
    1,128,453.72x = 1,557,265.96 × 645,029.24
  4. Step 4: Simplify right side
    1,128,453.72x = 1,004,482,075,431.52
  5. Step 5: Solve for x
    x = 1,004,482,075,431.52/1,128,453.72
  6. Step 6: Final answer
    x = 890,140.25

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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.