Home / 665,341,958.90-998,012,938.35-407,061,632.90

Finding the Fourth Proportional to 665,341,958.90, 998,012,938.35 and 407,061,632.90

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Solution

The fourth proportional to 665,341,958.90, 998,012,938.35 and 407,061,632.90 is: 610,592,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,341,958.90 : 998,012,938.35 = 407,061,632.90 : x
  2. Step 2: Convert to fraction form
    665,341,958.90/998,012,938.35 = 407,061,632.90/x
  3. Step 3: Cross multiply
    665,341,958.90x = 998,012,938.35 × 407,061,632.90
  4. Step 4: Simplify right side
    665,341,958.90x = 406,252,776,340,078,016
  5. Step 5: Solve for x
    x = 406,252,776,340,078,016/665,341,958.90
  6. Step 6: Final answer
    x = 610,592,449.35

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Double scale
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Similar ratio
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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.