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Finding the Fourth Proportional to 556,321.47, 767,728.43 and 301,672.65

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Solution

The fourth proportional to 556,321.47, 767,728.43 and 301,672.65 is: 416,310.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,321.47 : 767,728.43 = 301,672.65 : x
  2. Step 2: Convert to fraction form
    556,321.47/767,728.43 = 301,672.65/x
  3. Step 3: Cross multiply
    556,321.47x = 767,728.43 × 301,672.65
  4. Step 4: Simplify right side
    556,321.47x = 231,602,672,460.33
  5. Step 5: Solve for x
    x = 231,602,672,460.33/556,321.47
  6. Step 6: Final answer
    x = 416,310.87

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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.