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Finding the Fourth Proportional to 661,494,898.64, 912,854,049.48 and 368,139,388.88

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Solution

The fourth proportional to 661,494,898.64, 912,854,049.48 and 368,139,388.88 is: 508,027,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,494,898.64 : 912,854,049.48 = 368,139,388.88 : x
  2. Step 2: Convert to fraction form
    661,494,898.64/912,854,049.48 = 368,139,388.88/x
  3. Step 3: Cross multiply
    661,494,898.64x = 912,854,049.48 × 368,139,388.88
  4. Step 4: Simplify right side
    661,494,898.64x = 336,057,531,912,200,512
  5. Step 5: Solve for x
    x = 336,057,531,912,200,512/661,494,898.64
  6. Step 6: Final answer
    x = 508,027,397.65

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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.