Home / 1,128,478.93-1,557,300.94-645,054.55

Finding the Fourth Proportional to 1,128,478.93, 1,557,300.94 and 645,054.55

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Solution

The fourth proportional to 1,128,478.93, 1,557,300.94 and 645,054.55 is: 890,175.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,478.93 : 1,557,300.94 = 645,054.55 : x
  2. Step 2: Convert to fraction form
    1,128,478.93/1,557,300.94 = 645,054.55/x
  3. Step 3: Cross multiply
    1,128,478.93x = 1,557,300.94 × 645,054.55
  4. Step 4: Simplify right side
    1,128,478.93x = 1,004,544,051,560.39
  5. Step 5: Solve for x
    x = 1,004,544,051,560.39/1,128,478.93
  6. Step 6: Final answer
    x = 890,175.29

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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.