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Finding the Fourth Proportional to 640,181.91, 882,424.94 and 433,385.08

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Solution

The fourth proportional to 640,181.91, 882,424.94 and 433,385.08 is: 597,376.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,181.91 : 882,424.94 = 433,385.08 : x
  2. Step 2: Convert to fraction form
    640,181.91/882,424.94 = 433,385.08/x
  3. Step 3: Cross multiply
    640,181.91x = 882,424.94 × 433,385.08
  4. Step 4: Simplify right side
    640,181.91x = 382,429,803,806.55
  5. Step 5: Solve for x
    x = 382,429,803,806.55/640,181.91
  6. Step 6: Final answer
    x = 597,376.78

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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.