Home / 513,820,332.72-709,072,761.33-278,870,996.82

Finding the Fourth Proportional to 513,820,332.72, 709,072,761.33 and 278,870,996.82

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Solution

The fourth proportional to 513,820,332.72, 709,072,761.33 and 278,870,996.82 is: 384,842,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,820,332.72 : 709,072,761.33 = 278,870,996.82 : x
  2. Step 2: Convert to fraction form
    513,820,332.72/709,072,761.33 = 278,870,996.82/x
  3. Step 3: Cross multiply
    513,820,332.72x = 709,072,761.33 × 278,870,996.82
  4. Step 4: Simplify right side
    513,820,332.72x = 197,739,827,770,007,040
  5. Step 5: Solve for x
    x = 197,739,827,770,007,040/513,820,332.72
  6. Step 6: Final answer
    x = 384,842,356.71

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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.