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Finding the Fourth Proportional to 486,977.32, 671,978.82 and 334,146.52

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Solution

The fourth proportional to 486,977.32, 671,978.82 and 334,146.52 is: 461,087.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,977.32 : 671,978.82 = 334,146.52 : x
  2. Step 2: Convert to fraction form
    486,977.32/671,978.82 = 334,146.52/x
  3. Step 3: Cross multiply
    486,977.32x = 671,978.82 × 334,146.52
  4. Step 4: Simplify right side
    486,977.32x = 224,539,384,216.71
  5. Step 5: Solve for x
    x = 224,539,384,216.71/486,977.32
  6. Step 6: Final answer
    x = 461,087.97

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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.