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Finding the Fourth Proportional to 399,778.77, 602,365.40 and 330,258.83

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Solution

The fourth proportional to 399,778.77, 602,365.40 and 330,258.83 is: 497,616.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,778.77 : 602,365.40 = 330,258.83 : x
  2. Step 2: Convert to fraction form
    399,778.77/602,365.40 = 330,258.83/x
  3. Step 3: Cross multiply
    399,778.77x = 602,365.40 × 330,258.83
  4. Step 4: Simplify right side
    399,778.77x = 198,936,490,669.54
  5. Step 5: Solve for x
    x = 198,936,490,669.54/399,778.77
  6. Step 6: Final answer
    x = 497,616.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.