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Finding the Fourth Proportional to 641,345.68, 885,043.38 and 350,956.09

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Solution

The fourth proportional to 641,345.68, 885,043.38 and 350,956.09 is: 484,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,345.68 : 885,043.38 = 350,956.09 : x
  2. Step 2: Convert to fraction form
    641,345.68/885,043.38 = 350,956.09/x
  3. Step 3: Cross multiply
    641,345.68x = 885,043.38 × 350,956.09
  4. Step 4: Simplify right side
    641,345.68x = 310,611,364,125.18
  5. Step 5: Solve for x
    x = 310,611,364,125.18/641,345.68
  6. Step 6: Final answer
    x = 484,311.93

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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.