Home / 643,841.46-965,933.91-223,116.93

Finding the Fourth Proportional to 643,841.46, 965,933.91 and 223,116.93

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Solution

The fourth proportional to 643,841.46, 965,933.91 and 223,116.93 is: 334,734.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,841.46 : 965,933.91 = 223,116.93 : x
  2. Step 2: Convert to fraction form
    643,841.46/965,933.91 = 223,116.93/x
  3. Step 3: Cross multiply
    643,841.46x = 965,933.91 × 223,116.93
  4. Step 4: Simplify right side
    643,841.46x = 215,516,208,582.10
  5. Step 5: Solve for x
    x = 215,516,208,582.10/643,841.46
  6. Step 6: Final answer
    x = 334,734.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.