Home / 917,660.11-1,266,335.75-509,787.60

Finding the Fourth Proportional to 917,660.11, 1,266,335.75 and 509,787.60

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Solution

The fourth proportional to 917,660.11, 1,266,335.75 and 509,787.60 is: 703,487.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,660.11 : 1,266,335.75 = 509,787.60 : x
  2. Step 2: Convert to fraction form
    917,660.11/1,266,335.75 = 509,787.60/x
  3. Step 3: Cross multiply
    917,660.11x = 1,266,335.75 × 509,787.60
  4. Step 4: Simplify right side
    917,660.11x = 645,562,261,440.20
  5. Step 5: Solve for x
    x = 645,562,261,440.20/917,660.11
  6. Step 6: Final answer
    x = 703,487.33

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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.