Home / 431,207,999.40-646,811,999.10-329,171,327.40

Finding the Fourth Proportional to 431,207,999.40, 646,811,999.10 and 329,171,327.40

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Solution

The fourth proportional to 431,207,999.40, 646,811,999.10 and 329,171,327.40 is: 493,756,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,207,999.40 : 646,811,999.10 = 329,171,327.40 : x
  2. Step 2: Convert to fraction form
    431,207,999.40/646,811,999.10 = 329,171,327.40/x
  3. Step 3: Cross multiply
    431,207,999.40x = 646,811,999.10 × 329,171,327.40
  4. Step 4: Simplify right side
    431,207,999.40x = 212,911,964,321,994,592
  5. Step 5: Solve for x
    x = 212,911,964,321,994,592/431,207,999.40
  6. Step 6: Final answer
    x = 493,756,991.10

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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.