Home / 478,646,147.20-660,419,210.08-290,470,179.04

Finding the Fourth Proportional to 478,646,147.20, 660,419,210.08 and 290,470,179.04

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Solution

The fourth proportional to 478,646,147.20, 660,419,210.08 and 290,470,179.04 is: 400,780,591.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,646,147.20 : 660,419,210.08 = 290,470,179.04 : x
  2. Step 2: Convert to fraction form
    478,646,147.20/660,419,210.08 = 290,470,179.04/x
  3. Step 3: Cross multiply
    478,646,147.20x = 660,419,210.08 × 290,470,179.04
  4. Step 4: Simplify right side
    478,646,147.20x = 191,832,086,193,392,992
  5. Step 5: Solve for x
    x = 191,832,086,193,392,992/478,646,147.20
  6. Step 6: Final answer
    x = 400,780,591.92

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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.