Home / 646,294.95-891,911.22-355,919.21

Finding the Fourth Proportional to 646,294.95, 891,911.22 and 355,919.21

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Solution

The fourth proportional to 646,294.95, 891,911.22 and 355,919.21 is: 491,181.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,294.95 : 891,911.22 = 355,919.21 : x
  2. Step 2: Convert to fraction form
    646,294.95/891,911.22 = 355,919.21/x
  3. Step 3: Cross multiply
    646,294.95x = 891,911.22 × 355,919.21
  4. Step 4: Simplify right side
    646,294.95x = 317,448,342,383.02
  5. Step 5: Solve for x
    x = 317,448,342,383.02/646,294.95
  6. Step 6: Final answer
    x = 491,181.84

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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.