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Finding the Fourth Proportional to 523,321.91, 721,806.82 and 480,437.58

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Solution

The fourth proportional to 523,321.91, 721,806.82 and 480,437.58 is: 662,657.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,321.91 : 721,806.82 = 480,437.58 : x
  2. Step 2: Convert to fraction form
    523,321.91/721,806.82 = 480,437.58/x
  3. Step 3: Cross multiply
    523,321.91x = 721,806.82 × 480,437.58
  4. Step 4: Simplify right side
    523,321.91x = 346,783,120,625.05
  5. Step 5: Solve for x
    x = 346,783,120,625.05/523,321.91
  6. Step 6: Final answer
    x = 662,657.36

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1.5x scale

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.