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Finding the Fourth Proportional to 646,195.34, 891,768.42 and 355,836.92

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Solution

The fourth proportional to 646,195.34, 891,768.42 and 355,836.92 is: 491,065.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,195.34 : 891,768.42 = 355,836.92 : x
  2. Step 2: Convert to fraction form
    646,195.34/891,768.42 = 355,836.92/x
  3. Step 3: Cross multiply
    646,195.34x = 891,768.42 × 355,836.92
  4. Step 4: Simplify right side
    646,195.34x = 317,324,127,926.07
  5. Step 5: Solve for x
    x = 317,324,127,926.07/646,195.34
  6. Step 6: Final answer
    x = 491,065.33

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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.