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Finding the Fourth Proportional to 663,235.21, 914,614.38 and 421,097.41

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Solution

The fourth proportional to 663,235.21, 914,614.38 and 421,097.41 is: 580,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,235.21 : 914,614.38 = 421,097.41 : x
  2. Step 2: Convert to fraction form
    663,235.21/914,614.38 = 421,097.41/x
  3. Step 3: Cross multiply
    663,235.21x = 914,614.38 × 421,097.41
  4. Step 4: Simplify right side
    663,235.21x = 385,141,746,566.76
  5. Step 5: Solve for x
    x = 385,141,746,566.76/663,235.21
  6. Step 6: Final answer
    x = 580,701.60

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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.