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Finding the Fourth Proportional to 399,727,882.40, 598,696,028.40 and 328,064,266.40

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Solution

The fourth proportional to 399,727,882.40, 598,696,028.40 and 328,064,266.40 is: 491,361,203.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,727,882.40 : 598,696,028.40 = 328,064,266.40 : x
  2. Step 2: Convert to fraction form
    399,727,882.40/598,696,028.40 = 328,064,266.40/x
  3. Step 3: Cross multiply
    399,727,882.40x = 598,696,028.40 × 328,064,266.40
  4. Step 4: Simplify right side
    399,727,882.40x = 196,410,773,353,639,552
  5. Step 5: Solve for x
    x = 196,410,773,353,639,552/399,727,882.40
  6. Step 6: Final answer
    x = 491,361,203.46

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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.