Home / 687,745,231.90-1,031,617,847.85-470,066,998.30

Finding the Fourth Proportional to 687,745,231.90, 1,031,617,847.85 and 470,066,998.30

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Solution

The fourth proportional to 687,745,231.90, 1,031,617,847.85 and 470,066,998.30 is: 705,100,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,745,231.90 : 1,031,617,847.85 = 470,066,998.30 : x
  2. Step 2: Convert to fraction form
    687,745,231.90/1,031,617,847.85 = 470,066,998.30/x
  3. Step 3: Cross multiply
    687,745,231.90x = 1,031,617,847.85 × 470,066,998.30
  4. Step 4: Simplify right side
    687,745,231.90x = 484,929,505,131,555,648
  5. Step 5: Solve for x
    x = 484,929,505,131,555,648/687,745,231.90
  6. Step 6: Final answer
    x = 705,100,497.45

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Double scale
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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.