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Finding the Fourth Proportional to 639,374,830.88, 882,337,255.88 and 346,019,398.88

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Solution

The fourth proportional to 639,374,830.88, 882,337,255.88 and 346,019,398.88 is: 477,506,764.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,374,830.88 : 882,337,255.88 = 346,019,398.88 : x
  2. Step 2: Convert to fraction form
    639,374,830.88/882,337,255.88 = 346,019,398.88/x
  3. Step 3: Cross multiply
    639,374,830.88x = 882,337,255.88 × 346,019,398.88
  4. Step 4: Simplify right side
    639,374,830.88x = 305,305,806,889,026,368
  5. Step 5: Solve for x
    x = 305,305,806,889,026,368/639,374,830.88
  6. Step 6: Final answer
    x = 477,506,764.65

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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.