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Finding the Fourth Proportional to 642,598.71, 963,890.69 and 263,434.71

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Solution

The fourth proportional to 642,598.71, 963,890.69 and 263,434.71 is: 395,149.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,598.71 : 963,890.69 = 263,434.71 : x
  2. Step 2: Convert to fraction form
    642,598.71/963,890.69 = 263,434.71/x
  3. Step 3: Cross multiply
    642,598.71x = 963,890.69 × 263,434.71
  4. Step 4: Simplify right side
    642,598.71x = 253,922,263,074.68
  5. Step 5: Solve for x
    x = 253,922,263,074.68/642,598.71
  6. Step 6: Final answer
    x = 395,149.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.