Home / 680,066,472.80-1,020,099,709.20-407,968,680.80

Finding the Fourth Proportional to 680,066,472.80, 1,020,099,709.20 and 407,968,680.80

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Solution

The fourth proportional to 680,066,472.80, 1,020,099,709.20 and 407,968,680.80 is: 611,953,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,066,472.80 : 1,020,099,709.20 = 407,968,680.80 : x
  2. Step 2: Convert to fraction form
    680,066,472.80/1,020,099,709.20 = 407,968,680.80/x
  3. Step 3: Cross multiply
    680,066,472.80x = 1,020,099,709.20 × 407,968,680.80
  4. Step 4: Simplify right side
    680,066,472.80x = 416,168,732,646,787,648
  5. Step 5: Solve for x
    x = 416,168,732,646,787,648/680,066,472.80
  6. Step 6: Final answer
    x = 611,953,021.20

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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.