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Finding the Fourth Proportional to 644,181,068.88, 888,995,039.40 and 365,748,498

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Solution

The fourth proportional to 644,181,068.88, 888,995,039.40 and 365,748,498 is: 504,747,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,181,068.88 : 888,995,039.40 = 365,748,498 : x
  2. Step 2: Convert to fraction form
    644,181,068.88/888,995,039.40 = 365,748,498/x
  3. Step 3: Cross multiply
    644,181,068.88x = 888,995,039.40 × 365,748,498
  4. Step 4: Simplify right side
    644,181,068.88x = 325,148,600,390,000,832
  5. Step 5: Solve for x
    x = 325,148,600,390,000,832/644,181,068.88
  6. Step 6: Final answer
    x = 504,747,214.87

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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.