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Finding the Fourth Proportional to 556,335.78, 767,743.35 and 301,687.56

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Solution

The fourth proportional to 556,335.78, 767,743.35 and 301,687.56 is: 416,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,335.78 : 767,743.35 = 301,687.56 : x
  2. Step 2: Convert to fraction form
    556,335.78/767,743.35 = 301,687.56/x
  3. Step 3: Cross multiply
    556,335.78x = 767,743.35 × 301,687.56
  4. Step 4: Simplify right side
    556,335.78x = 231,618,617,967.73
  5. Step 5: Solve for x
    x = 231,618,617,967.73/556,335.78
  6. Step 6: Final answer
    x = 416,328.82

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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.