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Finding the Fourth Proportional to 479,919.12, 661,887.60 and 359,347.38

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Solution

The fourth proportional to 479,919.12, 661,887.60 and 359,347.38 is: 495,599.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,919.12 : 661,887.60 = 359,347.38 : x
  2. Step 2: Convert to fraction form
    479,919.12/661,887.60 = 359,347.38/x
  3. Step 3: Cross multiply
    479,919.12x = 661,887.60 × 359,347.38
  4. Step 4: Simplify right side
    479,919.12x = 237,847,574,914.49
  5. Step 5: Solve for x
    x = 237,847,574,914.49/479,919.12
  6. Step 6: Final answer
    x = 495,599.29

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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.