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Finding the Fourth Proportional to 667,362.19, 920,959.01 and 361,438.39

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Solution

The fourth proportional to 667,362.19, 920,959.01 and 361,438.39 is: 498,784.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,362.19 : 920,959.01 = 361,438.39 : x
  2. Step 2: Convert to fraction form
    667,362.19/920,959.01 = 361,438.39/x
  3. Step 3: Cross multiply
    667,362.19x = 920,959.01 × 361,438.39
  4. Step 4: Simplify right side
    667,362.19x = 332,869,937,225.60
  5. Step 5: Solve for x
    x = 332,869,937,225.60/667,362.19
  6. Step 6: Final answer
    x = 498,784.53

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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.