Home / 407,552,007.20-611,328,010.80-326,930,439.20

Finding the Fourth Proportional to 407,552,007.20, 611,328,010.80 and 326,930,439.20

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Solution

The fourth proportional to 407,552,007.20, 611,328,010.80 and 326,930,439.20 is: 490,395,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,552,007.20 : 611,328,010.80 = 326,930,439.20 : x
  2. Step 2: Convert to fraction form
    407,552,007.20/611,328,010.80 = 326,930,439.20/x
  3. Step 3: Cross multiply
    407,552,007.20x = 611,328,010.80 × 326,930,439.20
  4. Step 4: Simplify right side
    407,552,007.20x = 199,861,735,066,106,336
  5. Step 5: Solve for x
    x = 199,861,735,066,106,336/407,552,007.20
  6. Step 6: Final answer
    x = 490,395,658.80

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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.