Home / 659,021.78-909,190.02-413,862.32

Finding the Fourth Proportional to 659,021.78, 909,190.02 and 413,862.32

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Solution

The fourth proportional to 659,021.78, 909,190.02 and 413,862.32 is: 570,966.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,021.78 : 909,190.02 = 413,862.32 : x
  2. Step 2: Convert to fraction form
    659,021.78/909,190.02 = 413,862.32/x
  3. Step 3: Cross multiply
    659,021.78x = 909,190.02 × 413,862.32
  4. Step 4: Simplify right side
    659,021.78x = 376,279,486,452.10
  5. Step 5: Solve for x
    x = 376,279,486,452.10/659,021.78
  6. Step 6: Final answer
    x = 570,966.70

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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.