Home / 663,551,999.70-995,327,999.55-421,488,230.10

Finding the Fourth Proportional to 663,551,999.70, 995,327,999.55 and 421,488,230.10

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Solution

The fourth proportional to 663,551,999.70, 995,327,999.55 and 421,488,230.10 is: 632,232,345.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,551,999.70 : 995,327,999.55 = 421,488,230.10 : x
  2. Step 2: Convert to fraction form
    663,551,999.70/995,327,999.55 = 421,488,230.10/x
  3. Step 3: Cross multiply
    663,551,999.70x = 995,327,999.55 × 421,488,230.10
  4. Step 4: Simplify right side
    663,551,999.70x = 419,519,036,899,303,104
  5. Step 5: Solve for x
    x = 419,519,036,899,303,104/663,551,999.70
  6. Step 6: Final answer
    x = 632,232,345.15

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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.