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Finding the Fourth Proportional to 684,995.54, 945,295.68 and 379,093.02

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Solution

The fourth proportional to 684,995.54, 945,295.68 and 379,093.02 is: 523,149.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,995.54 : 945,295.68 = 379,093.02 : x
  2. Step 2: Convert to fraction form
    684,995.54/945,295.68 = 379,093.02/x
  3. Step 3: Cross multiply
    684,995.54x = 945,295.68 × 379,093.02
  4. Step 4: Simplify right side
    684,995.54x = 358,354,991,066.26
  5. Step 5: Solve for x
    x = 358,354,991,066.26/684,995.54
  6. Step 6: Final answer
    x = 523,149.38

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1.5x scale

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.