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Finding the Fourth Proportional to 641,310.39, 884,994.68 and 350,920.76

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Solution

The fourth proportional to 641,310.39, 884,994.68 and 350,920.76 is: 484,263.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,310.39 : 884,994.68 = 350,920.76 : x
  2. Step 2: Convert to fraction form
    641,310.39/884,994.68 = 350,920.76/x
  3. Step 3: Cross multiply
    641,310.39x = 884,994.68 × 350,920.76
  4. Step 4: Simplify right side
    641,310.39x = 310,562,999,521.98
  5. Step 5: Solve for x
    x = 310,562,999,521.98/641,310.39
  6. Step 6: Final answer
    x = 484,263.17

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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.