Home / 1,189,128.78-1,640,311.43-758,924.01

Finding the Fourth Proportional to 1,189,128.78, 1,640,311.43 and 758,924.01

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Solution

The fourth proportional to 1,189,128.78, 1,640,311.43 and 758,924.01 is: 1,046,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,128.78 : 1,640,311.43 = 758,924.01 : x
  2. Step 2: Convert to fraction form
    1,189,128.78/1,640,311.43 = 758,924.01/x
  3. Step 3: Cross multiply
    1,189,128.78x = 1,640,311.43 × 758,924.01
  4. Step 4: Simplify right side
    1,189,128.78x = 1,244,871,730,001.74
  5. Step 5: Solve for x
    x = 1,244,871,730,001.74/1,189,128.78
  6. Step 6: Final answer
    x = 1,046,877.13

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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.