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Finding the Fourth Proportional to 684,970.92, 945,245.72 and 379,047.11

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Solution

The fourth proportional to 684,970.92, 945,245.72 and 379,047.11 is: 523,077.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,970.92 : 945,245.72 = 379,047.11 : x
  2. Step 2: Convert to fraction form
    684,970.92/945,245.72 = 379,047.11/x
  3. Step 3: Cross multiply
    684,970.92x = 945,245.72 × 379,047.11
  4. Step 4: Simplify right side
    684,970.92x = 358,292,651,784.41
  5. Step 5: Solve for x
    x = 358,292,651,784.41/684,970.92
  6. Step 6: Final answer
    x = 523,077.17

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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.