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Finding the Fourth Proportional to 610,281.78, 842,238.75 and 338,434.93

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Solution

The fourth proportional to 610,281.78, 842,238.75 and 338,434.93 is: 467,067.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,281.78 : 842,238.75 = 338,434.93 : x
  2. Step 2: Convert to fraction form
    610,281.78/842,238.75 = 338,434.93/x
  3. Step 3: Cross multiply
    610,281.78x = 842,238.75 × 338,434.93
  4. Step 4: Simplify right side
    610,281.78x = 285,043,012,399.54
  5. Step 5: Solve for x
    x = 285,043,012,399.54/610,281.78
  6. Step 6: Final answer
    x = 467,067.87

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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.