Home / 689,367.72-951,416.10-387,620.04

Finding the Fourth Proportional to 689,367.72, 951,416.10 and 387,620.04

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Solution

The fourth proportional to 689,367.72, 951,416.10 and 387,620.04 is: 534,965.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,367.72 : 951,416.10 = 387,620.04 : x
  2. Step 2: Convert to fraction form
    689,367.72/951,416.10 = 387,620.04/x
  3. Step 3: Cross multiply
    689,367.72x = 951,416.10 × 387,620.04
  4. Step 4: Simplify right side
    689,367.72x = 368,787,946,738.64
  5. Step 5: Solve for x
    x = 368,787,946,738.64/689,367.72
  6. Step 6: Final answer
    x = 534,965.50

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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.