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Finding the Fourth Proportional to 639,374,807.84, 882,337,224.12 and 346,019,375.84

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Solution

The fourth proportional to 639,374,807.84, 882,337,224.12 and 346,019,375.84 is: 477,506,732.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,374,807.84 : 882,337,224.12 = 346,019,375.84 : x
  2. Step 2: Convert to fraction form
    639,374,807.84/882,337,224.12 = 346,019,375.84/x
  3. Step 3: Cross multiply
    639,374,807.84x = 882,337,224.12 × 346,019,375.84
  4. Step 4: Simplify right side
    639,374,807.84x = 305,305,775,570,400,576
  5. Step 5: Solve for x
    x = 305,305,775,570,400,576/639,374,807.84
  6. Step 6: Final answer
    x = 477,506,732.87

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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.