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Finding the Fourth Proportional to 447,970,892.72, 618,168,264.37 and 249,723,618.30

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Solution

The fourth proportional to 447,970,892.72, 618,168,264.37 and 249,723,618.30 is: 344,600,995.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,970,892.72 : 618,168,264.37 = 249,723,618.30 : x
  2. Step 2: Convert to fraction form
    447,970,892.72/618,168,264.37 = 249,723,618.30/x
  3. Step 3: Cross multiply
    447,970,892.72x = 618,168,264.37 × 249,723,618.30
  4. Step 4: Simplify right side
    447,970,892.72x = 154,371,215,696,083,040
  5. Step 5: Solve for x
    x = 154,371,215,696,083,040/447,970,892.72
  6. Step 6: Final answer
    x = 344,600,995.75

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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.