Home / 515,498,945.65-711,463,506.85-289,463,304.11

Finding the Fourth Proportional to 515,498,945.65, 711,463,506.85 and 289,463,304.11

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Solution

The fourth proportional to 515,498,945.65, 711,463,506.85 and 289,463,304.11 is: 399,501,452.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,498,945.65 : 711,463,506.85 = 289,463,304.11 : x
  2. Step 2: Convert to fraction form
    515,498,945.65/711,463,506.85 = 289,463,304.11/x
  3. Step 3: Cross multiply
    515,498,945.65x = 711,463,506.85 × 289,463,304.11
  4. Step 4: Simplify right side
    515,498,945.65x = 205,942,577,443,293,152
  5. Step 5: Solve for x
    x = 205,942,577,443,293,152/515,498,945.65
  6. Step 6: Final answer
    x = 399,501,452.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.