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Finding the Fourth Proportional to 480,722.32, 663,480.04 and 289,735.93

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Solution

The fourth proportional to 480,722.32, 663,480.04 and 289,735.93 is: 399,885.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,722.32 : 663,480.04 = 289,735.93 : x
  2. Step 2: Convert to fraction form
    480,722.32/663,480.04 = 289,735.93/x
  3. Step 3: Cross multiply
    480,722.32x = 663,480.04 × 289,735.93
  4. Step 4: Simplify right side
    480,722.32x = 192,234,006,425.84
  5. Step 5: Solve for x
    x = 192,234,006,425.84/480,722.32
  6. Step 6: Final answer
    x = 399,885.75

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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.