Home / 520,181,618.39-780,445,880.22-345,991,367.97

Finding the Fourth Proportional to 520,181,618.39, 780,445,880.22 and 345,991,367.97

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Solution

The fourth proportional to 520,181,618.39, 780,445,880.22 and 345,991,367.97 is: 519,102,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,181,618.39 : 780,445,880.22 = 345,991,367.97 : x
  2. Step 2: Convert to fraction form
    520,181,618.39/780,445,880.22 = 345,991,367.97/x
  3. Step 3: Cross multiply
    520,181,618.39x = 780,445,880.22 × 345,991,367.97
  4. Step 4: Simplify right side
    520,181,618.39x = 270,027,537,725,155,648
  5. Step 5: Solve for x
    x = 270,027,537,725,155,648/520,181,618.39
  6. Step 6: Final answer
    x = 519,102,421.50

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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.