Home / 442,138,729.20-663,208,093.80-399,092,008.20

Finding the Fourth Proportional to 442,138,729.20, 663,208,093.80 and 399,092,008.20

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Solution

The fourth proportional to 442,138,729.20, 663,208,093.80 and 399,092,008.20 is: 598,638,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,138,729.20 : 663,208,093.80 = 399,092,008.20 : x
  2. Step 2: Convert to fraction form
    442,138,729.20/663,208,093.80 = 399,092,008.20/x
  3. Step 3: Cross multiply
    442,138,729.20x = 663,208,093.80 × 399,092,008.20
  4. Step 4: Simplify right side
    442,138,729.20x = 264,681,050,009,135,936
  5. Step 5: Solve for x
    x = 264,681,050,009,135,936/442,138,729.20
  6. Step 6: Final answer
    x = 598,638,012.30

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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.