Home / 660,522,666.90-990,784,000.35-442,844,433.30

Finding the Fourth Proportional to 660,522,666.90, 990,784,000.35 and 442,844,433.30

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Solution

The fourth proportional to 660,522,666.90, 990,784,000.35 and 442,844,433.30 is: 664,266,649.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,522,666.90 : 990,784,000.35 = 442,844,433.30 : x
  2. Step 2: Convert to fraction form
    660,522,666.90/990,784,000.35 = 442,844,433.30/x
  3. Step 3: Cross multiply
    660,522,666.90x = 990,784,000.35 × 442,844,433.30
  4. Step 4: Simplify right side
    660,522,666.90x = 438,763,179,157,702,784
  5. Step 5: Solve for x
    x = 438,763,179,157,702,784/660,522,666.90
  6. Step 6: Final answer
    x = 664,266,649.95

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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.