Home / 660,522,620.40-990,783,930.60-442,844,386.80

Finding the Fourth Proportional to 660,522,620.40, 990,783,930.60 and 442,844,386.80

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Solution

The fourth proportional to 660,522,620.40, 990,783,930.60 and 442,844,386.80 is: 664,266,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,522,620.40 : 990,783,930.60 = 442,844,386.80 : x
  2. Step 2: Convert to fraction form
    660,522,620.40/990,783,930.60 = 442,844,386.80/x
  3. Step 3: Cross multiply
    660,522,620.40x = 990,783,930.60 × 442,844,386.80
  4. Step 4: Simplify right side
    660,522,620.40x = 438,763,102,197,850,752
  5. Step 5: Solve for x
    x = 438,763,102,197,850,752/660,522,620.40
  6. Step 6: Final answer
    x = 664,266,580.20

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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.