Home / 520,590,982.23-780,369,171.30-261,013,940.19

Finding the Fourth Proportional to 520,590,982.23, 780,369,171.30 and 261,013,940.19

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Solution

The fourth proportional to 520,590,982.23, 780,369,171.30 and 261,013,940.19 is: 391,261,545.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,590,982.23 : 780,369,171.30 = 261,013,940.19 : x
  2. Step 2: Convert to fraction form
    520,590,982.23/780,369,171.30 = 261,013,940.19/x
  3. Step 3: Cross multiply
    520,590,982.23x = 780,369,171.30 × 261,013,940.19
  4. Step 4: Simplify right side
    520,590,982.23x = 203,687,232,203,818,048
  5. Step 5: Solve for x
    x = 203,687,232,203,818,048/520,590,982.23
  6. Step 6: Final answer
    x = 391,261,545.35

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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.