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Finding the Fourth Proportional to 624,945.62, 862,424.70 and 338,465.72

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Solution

The fourth proportional to 624,945.62, 862,424.70 and 338,465.72 is: 467,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,945.62 : 862,424.70 = 338,465.72 : x
  2. Step 2: Convert to fraction form
    624,945.62/862,424.70 = 338,465.72/x
  3. Step 3: Cross multiply
    624,945.62x = 862,424.70 × 338,465.72
  4. Step 4: Simplify right side
    624,945.62x = 291,901,197,031.28
  5. Step 5: Solve for x
    x = 291,901,197,031.28/624,945.62
  6. Step 6: Final answer
    x = 467,082.56

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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.