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Finding the Fourth Proportional to 556,380.66, 767,805.74 and 301,731.85

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Solution

The fourth proportional to 556,380.66, 767,805.74 and 301,731.85 is: 416,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,380.66 : 767,805.74 = 301,731.85 : x
  2. Step 2: Convert to fraction form
    556,380.66/767,805.74 = 301,731.85/x
  3. Step 3: Cross multiply
    556,380.66x = 767,805.74 × 301,731.85
  4. Step 4: Simplify right side
    556,380.66x = 231,671,446,370.82
  5. Step 5: Solve for x
    x = 231,671,446,370.82/556,380.66
  6. Step 6: Final answer
    x = 416,390.19

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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.