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Finding the Fourth Proportional to 624,138.70, 936,208.05 and 617,917.90

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Solution

The fourth proportional to 624,138.70, 936,208.05 and 617,917.90 is: 926,876.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,138.70 : 936,208.05 = 617,917.90 : x
  2. Step 2: Convert to fraction form
    624,138.70/936,208.05 = 617,917.90/x
  3. Step 3: Cross multiply
    624,138.70x = 936,208.05 × 617,917.90
  4. Step 4: Simplify right side
    624,138.70x = 578,499,712,219.10
  5. Step 5: Solve for x
    x = 578,499,712,219.10/624,138.70
  6. Step 6: Final answer
    x = 926,876.85

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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.