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Finding the Fourth Proportional to 658,215.60, 987,031.80 and 303,338.40

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Solution

The fourth proportional to 658,215.60, 987,031.80 and 303,338.40 is: 454,873.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,215.60 : 987,031.80 = 303,338.40 : x
  2. Step 2: Convert to fraction form
    658,215.60/987,031.80 = 303,338.40/x
  3. Step 3: Cross multiply
    658,215.60x = 987,031.80 × 303,338.40
  4. Step 4: Simplify right side
    658,215.60x = 299,404,646,961.12
  5. Step 5: Solve for x
    x = 299,404,646,961.12/658,215.60
  6. Step 6: Final answer
    x = 454,873.22

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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.