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Finding the Fourth Proportional to 642,338.63, 963,192.66 and 317,751.71

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Solution

The fourth proportional to 642,338.63, 963,192.66 and 317,751.71 is: 476,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,338.63 : 963,192.66 = 317,751.71 : x
  2. Step 2: Convert to fraction form
    642,338.63/963,192.66 = 317,751.71/x
  3. Step 3: Cross multiply
    642,338.63x = 963,192.66 × 317,751.71
  4. Step 4: Simplify right side
    642,338.63x = 306,056,109,958.49
  5. Step 5: Solve for x
    x = 306,056,109,958.49/642,338.63
  6. Step 6: Final answer
    x = 476,471.60

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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.