Home / 660,455,285.40-990,682,928.10-272,078,202.60

Finding the Fourth Proportional to 660,455,285.40, 990,682,928.10 and 272,078,202.60

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Solution

The fourth proportional to 660,455,285.40, 990,682,928.10 and 272,078,202.60 is: 408,117,303.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,455,285.40 : 990,682,928.10 = 272,078,202.60 : x
  2. Step 2: Convert to fraction form
    660,455,285.40/990,682,928.10 = 272,078,202.60/x
  3. Step 3: Cross multiply
    660,455,285.40x = 990,682,928.10 × 272,078,202.60
  4. Step 4: Simplify right side
    660,455,285.40x = 269,543,230,423,953,056
  5. Step 5: Solve for x
    x = 269,543,230,423,953,056/660,455,285.40
  6. Step 6: Final answer
    x = 408,117,303.90

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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.