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Finding the Fourth Proportional to 480,564.78, 663,228.63 and 276,623.34

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Solution

The fourth proportional to 480,564.78, 663,228.63 and 276,623.34 is: 381,768.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,564.78 : 663,228.63 = 276,623.34 : x
  2. Step 2: Convert to fraction form
    480,564.78/663,228.63 = 276,623.34/x
  3. Step 3: Cross multiply
    480,564.78x = 663,228.63 × 276,623.34
  4. Step 4: Simplify right side
    480,564.78x = 183,464,518,814.22
  5. Step 5: Solve for x
    x = 183,464,518,814.22/480,564.78
  6. Step 6: Final answer
    x = 381,768.55

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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.