Home / 1,128,454.22-1,557,266.65-645,029.74

Finding the Fourth Proportional to 1,128,454.22, 1,557,266.65 and 645,029.74

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Solution

The fourth proportional to 1,128,454.22, 1,557,266.65 and 645,029.74 is: 890,140.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,454.22 : 1,557,266.65 = 645,029.74 : x
  2. Step 2: Convert to fraction form
    1,128,454.22/1,557,266.65 = 645,029.74/x
  3. Step 3: Cross multiply
    1,128,454.22x = 1,557,266.65 × 645,029.74
  4. Step 4: Simplify right side
    1,128,454.22x = 1,004,483,299,135.02
  5. Step 5: Solve for x
    x = 1,004,483,299,135.02/1,128,454.22
  6. Step 6: Final answer
    x = 890,140.94

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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.