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Finding the Fourth Proportional to 608,252.78, 838,993.38 and 390,115.93

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Solution

The fourth proportional to 608,252.78, 838,993.38 and 390,115.93 is: 538,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,252.78 : 838,993.38 = 390,115.93 : x
  2. Step 2: Convert to fraction form
    608,252.78/838,993.38 = 390,115.93/x
  3. Step 3: Cross multiply
    608,252.78x = 838,993.38 × 390,115.93
  4. Step 4: Simplify right side
    608,252.78x = 327,304,682,702.54
  5. Step 5: Solve for x
    x = 327,304,682,702.54/608,252.78
  6. Step 6: Final answer
    x = 538,106.35

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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.