Home / 520,005,411.39-779,519,847.60-174,717,564.87

Finding the Fourth Proportional to 520,005,411.39, 779,519,847.60 and 174,717,564.87

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Solution

The fourth proportional to 520,005,411.39, 779,519,847.60 and 174,717,564.87 is: 261,912,292.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,005,411.39 : 779,519,847.60 = 174,717,564.87 : x
  2. Step 2: Convert to fraction form
    520,005,411.39/779,519,847.60 = 174,717,564.87/x
  3. Step 3: Cross multiply
    520,005,411.39x = 779,519,847.60 × 174,717,564.87
  4. Step 4: Simplify right side
    520,005,411.39x = 136,195,809,540,505,520
  5. Step 5: Solve for x
    x = 136,195,809,540,505,520/520,005,411.39
  6. Step 6: Final answer
    x = 261,912,292.75

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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.