Home / 990,115,835.40-1,485,173,753.10-299,933,408.70

Finding the Fourth Proportional to 990,115,835.40, 1,485,173,753.10 and 299,933,408.70

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Solution

The fourth proportional to 990,115,835.40, 1,485,173,753.10 and 299,933,408.70 is: 449,900,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,115,835.40 : 1,485,173,753.10 = 299,933,408.70 : x
  2. Step 2: Convert to fraction form
    990,115,835.40/1,485,173,753.10 = 299,933,408.70/x
  3. Step 3: Cross multiply
    990,115,835.40x = 1,485,173,753.10 × 299,933,408.70
  4. Step 4: Simplify right side
    990,115,835.40x = 445,453,226,279,055,168
  5. Step 5: Solve for x
    x = 445,453,226,279,055,168/990,115,835.40
  6. Step 6: Final answer
    x = 449,900,113.05

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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.