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Finding the Fourth Proportional to 578,603.84, 867,911.52 and 279,014.72

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Solution

The fourth proportional to 578,603.84, 867,911.52 and 279,014.72 is: 418,524.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,603.84 : 867,911.52 = 279,014.72 : x
  2. Step 2: Convert to fraction form
    578,603.84/867,911.52 = 279,014.72/x
  3. Step 3: Cross multiply
    578,603.84x = 867,911.52 × 279,014.72
  4. Step 4: Simplify right side
    578,603.84x = 242,160,089,737.57
  5. Step 5: Solve for x
    x = 242,160,089,737.57/578,603.84
  6. Step 6: Final answer
    x = 418,524.86

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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.