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Finding the Fourth Proportional to 874,331.89, 1,311,674.65 and 368,894.12

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Solution

The fourth proportional to 874,331.89, 1,311,674.65 and 368,894.12 is: 553,415.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,331.89 : 1,311,674.65 = 368,894.12 : x
  2. Step 2: Convert to fraction form
    874,331.89/1,311,674.65 = 368,894.12/x
  3. Step 3: Cross multiply
    874,331.89x = 1,311,674.65 × 368,894.12
  4. Step 4: Simplify right side
    874,331.89x = 483,869,058,257.45
  5. Step 5: Solve for x
    x = 483,869,058,257.45/874,331.89
  6. Step 6: Final answer
    x = 553,415.77

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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.