Home / 726,654.78-1,002,783.60-408,702.78

Finding the Fourth Proportional to 726,654.78, 1,002,783.60 and 408,702.78

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Solution

The fourth proportional to 726,654.78, 1,002,783.60 and 408,702.78 is: 564,009.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,654.78 : 1,002,783.60 = 408,702.78 : x
  2. Step 2: Convert to fraction form
    726,654.78/1,002,783.60 = 408,702.78/x
  3. Step 3: Cross multiply
    726,654.78x = 1,002,783.60 × 408,702.78
  4. Step 4: Simplify right side
    726,654.78x = 409,840,445,058.41
  5. Step 5: Solve for x
    x = 409,840,445,058.41/726,654.78
  6. Step 6: Final answer
    x = 564,009.84

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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.