Home / 839,731,879.40-1,259,597,819.10-472,399,860.20

Finding the Fourth Proportional to 839,731,879.40, 1,259,597,819.10 and 472,399,860.20

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Solution

The fourth proportional to 839,731,879.40, 1,259,597,819.10 and 472,399,860.20 is: 708,599,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,731,879.40 : 1,259,597,819.10 = 472,399,860.20 : x
  2. Step 2: Convert to fraction form
    839,731,879.40/1,259,597,819.10 = 472,399,860.20/x
  3. Step 3: Cross multiply
    839,731,879.40x = 1,259,597,819.10 × 472,399,860.20
  4. Step 4: Simplify right side
    839,731,879.40x = 595,033,833,651,064,832
  5. Step 5: Solve for x
    x = 595,033,833,651,064,832/839,731,879.40
  6. Step 6: Final answer
    x = 708,599,790.30

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1.5x scale

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.