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Finding the Fourth Proportional to 556,789.66, 768,371.82 and 302,140.87

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Solution

The fourth proportional to 556,789.66, 768,371.82 and 302,140.87 is: 416,955.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,789.66 : 768,371.82 = 302,140.87 : x
  2. Step 2: Convert to fraction form
    556,789.66/768,371.82 = 302,140.87/x
  3. Step 3: Cross multiply
    556,789.66x = 768,371.82 × 302,140.87
  4. Step 4: Simplify right side
    556,789.66x = 232,156,526,336.42
  5. Step 5: Solve for x
    x = 232,156,526,336.42/556,789.66
  6. Step 6: Final answer
    x = 416,955.53

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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.