Home / 993,887,995.20-1,490,831,992.80-266,950,190.40

Finding the Fourth Proportional to 993,887,995.20, 1,490,831,992.80 and 266,950,190.40

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Solution

The fourth proportional to 993,887,995.20, 1,490,831,992.80 and 266,950,190.40 is: 400,425,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,887,995.20 : 1,490,831,992.80 = 266,950,190.40 : x
  2. Step 2: Convert to fraction form
    993,887,995.20/1,490,831,992.80 = 266,950,190.40/x
  3. Step 3: Cross multiply
    993,887,995.20x = 1,490,831,992.80 × 266,950,190.40
  4. Step 4: Simplify right side
    993,887,995.20x = 397,977,884,332,371,456
  5. Step 5: Solve for x
    x = 397,977,884,332,371,456/993,887,995.20
  6. Step 6: Final answer
    x = 400,425,285.60

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Similar ratio
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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.