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Finding the Fourth Proportional to 684,978.08, 945,236.22 and 379,048.92

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Solution

The fourth proportional to 684,978.08, 945,236.22 and 379,048.92 is: 523,068.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,978.08 : 945,236.22 = 379,048.92 : x
  2. Step 2: Convert to fraction form
    684,978.08/945,236.22 = 379,048.92/x
  3. Step 3: Cross multiply
    684,978.08x = 945,236.22 × 379,048.92
  4. Step 4: Simplify right side
    684,978.08x = 358,290,768,335.88
  5. Step 5: Solve for x
    x = 358,290,768,335.88/684,978.08
  6. Step 6: Final answer
    x = 523,068.95

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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.