Home / 660,522,654.90-990,783,982.35-442,844,421.30

Finding the Fourth Proportional to 660,522,654.90, 990,783,982.35 and 442,844,421.30

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Solution

The fourth proportional to 660,522,654.90, 990,783,982.35 and 442,844,421.30 is: 664,266,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,522,654.90 : 990,783,982.35 = 442,844,421.30 : x
  2. Step 2: Convert to fraction form
    660,522,654.90/990,783,982.35 = 442,844,421.30/x
  3. Step 3: Cross multiply
    660,522,654.90x = 990,783,982.35 × 442,844,421.30
  4. Step 4: Simplify right side
    660,522,654.90x = 438,763,159,297,095,168
  5. Step 5: Solve for x
    x = 438,763,159,297,095,168/660,522,654.90
  6. Step 6: Final answer
    x = 664,266,631.95

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Double scale
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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.