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Finding the Fourth Proportional to 684,875.70, 945,110.26 and 378,944.10

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Solution

The fourth proportional to 684,875.70, 945,110.26 and 378,944.10 is: 522,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,875.70 : 945,110.26 = 378,944.10 : x
  2. Step 2: Convert to fraction form
    684,875.70/945,110.26 = 378,944.10/x
  3. Step 3: Cross multiply
    684,875.70x = 945,110.26 × 378,944.10
  4. Step 4: Simplify right side
    684,875.70x = 358,143,956,876.47
  5. Step 5: Solve for x
    x = 358,143,956,876.47/684,875.70
  6. Step 6: Final answer
    x = 522,932.78

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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.