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Finding the Fourth Proportional to 684,183.94, 944,145.96 and 378,240.86

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Solution

The fourth proportional to 684,183.94, 944,145.96 and 378,240.86 is: 521,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,183.94 : 944,145.96 = 378,240.86 : x
  2. Step 2: Convert to fraction form
    684,183.94/944,145.96 = 378,240.86/x
  3. Step 3: Cross multiply
    684,183.94x = 944,145.96 × 378,240.86
  4. Step 4: Simplify right side
    684,183.94x = 357,114,579,875.93
  5. Step 5: Solve for x
    x = 357,114,579,875.93/684,183.94
  6. Step 6: Final answer
    x = 521,956.98

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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.