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Finding the Fourth Proportional to 684,614.63, 944,756.54 and 378,690.77

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Solution

The fourth proportional to 684,614.63, 944,756.54 and 378,690.77 is: 522,586.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,614.63 : 944,756.54 = 378,690.77 : x
  2. Step 2: Convert to fraction form
    684,614.63/944,756.54 = 378,690.77/x
  3. Step 3: Cross multiply
    684,614.63x = 944,756.54 × 378,690.77
  4. Step 4: Simplify right side
    684,614.63x = 357,770,579,701.68
  5. Step 5: Solve for x
    x = 357,770,579,701.68/684,614.63
  6. Step 6: Final answer
    x = 522,586.82

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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.