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Finding the Fourth Proportional to 479,921.12, 661,890.36 and 359,349.38

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Solution

The fourth proportional to 479,921.12, 661,890.36 and 359,349.38 is: 495,602.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,921.12 : 661,890.36 = 359,349.38 : x
  2. Step 2: Convert to fraction form
    479,921.12/661,890.36 = 359,349.38/x
  3. Step 3: Cross multiply
    479,921.12x = 661,890.36 × 359,349.38
  4. Step 4: Simplify right side
    479,921.12x = 237,849,890,493.98
  5. Step 5: Solve for x
    x = 237,849,890,493.98/479,921.12
  6. Step 6: Final answer
    x = 495,602.05

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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.