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Finding the Fourth Proportional to 480,702.78, 663,169.40 and 276,704.89

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Solution

The fourth proportional to 480,702.78, 663,169.40 and 276,704.89 is: 381,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,702.78 : 663,169.40 = 276,704.89 : x
  2. Step 2: Convert to fraction form
    480,702.78/663,169.40 = 276,704.89/x
  3. Step 3: Cross multiply
    480,702.78x = 663,169.40 × 276,704.89
  4. Step 4: Simplify right side
    480,702.78x = 183,502,214,494.84
  5. Step 5: Solve for x
    x = 183,502,214,494.84/480,702.78
  6. Step 6: Final answer
    x = 381,737.37

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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.