Home / 744,312.12-1,027,128.78-422,051.64

Finding the Fourth Proportional to 744,312.12, 1,027,128.78 and 422,051.64

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Solution

The fourth proportional to 744,312.12, 1,027,128.78 and 422,051.64 is: 582,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,312.12 : 1,027,128.78 = 422,051.64 : x
  2. Step 2: Convert to fraction form
    744,312.12/1,027,128.78 = 422,051.64/x
  3. Step 3: Cross multiply
    744,312.12x = 1,027,128.78 × 422,051.64
  4. Step 4: Simplify right side
    744,312.12x = 433,501,386,090.20
  5. Step 5: Solve for x
    x = 433,501,386,090.20/744,312.12
  6. Step 6: Final answer
    x = 582,418.82

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1.5x scale

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.