Home / 550,386.18-758,829.78-356,451.21

Finding the Fourth Proportional to 550,386.18, 758,829.78 and 356,451.21

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Solution

The fourth proportional to 550,386.18, 758,829.78 and 356,451.21 is: 491,447.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,386.18 : 758,829.78 = 356,451.21 : x
  2. Step 2: Convert to fraction form
    550,386.18/758,829.78 = 356,451.21/x
  3. Step 3: Cross multiply
    550,386.18x = 758,829.78 × 356,451.21
  4. Step 4: Simplify right side
    550,386.18x = 270,485,793,265.03
  5. Step 5: Solve for x
    x = 270,485,793,265.03/550,386.18
  6. Step 6: Final answer
    x = 491,447.28

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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.