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Finding the Fourth Proportional to 659,689,649.28, 988,673,670.72 and 368,545,011.84

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Solution

The fourth proportional to 659,689,649.28, 988,673,670.72 and 368,545,011.84 is: 552,336,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,689,649.28 : 988,673,670.72 = 368,545,011.84 : x
  2. Step 2: Convert to fraction form
    659,689,649.28/988,673,670.72 = 368,545,011.84/x
  3. Step 3: Cross multiply
    659,689,649.28x = 988,673,670.72 × 368,545,011.84
  4. Step 4: Simplify right side
    659,689,649.28x = 364,370,749,681,398,656
  5. Step 5: Solve for x
    x = 364,370,749,681,398,656/659,689,649.28
  6. Step 6: Final answer
    x = 552,336,617.80

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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.