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Finding the Fourth Proportional to 1,769,963.40, 2,655,601.20 and 705,769.20

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Solution

The fourth proportional to 1,769,963.40, 2,655,601.20 and 705,769.20 is: 1,058,915.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769,963.40 : 2,655,601.20 = 705,769.20 : x
  2. Step 2: Convert to fraction form
    1,769,963.40/2,655,601.20 = 705,769.20/x
  3. Step 3: Cross multiply
    1,769,963.40x = 2,655,601.20 × 705,769.20
  4. Step 4: Simplify right side
    1,769,963.40x = 1,874,241,534,443.04
  5. Step 5: Solve for x
    x = 1,874,241,534,443.04/1,769,963.40
  6. Step 6: Final answer
    x = 1,058,915.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.