Home / 515,398,385.24-711,243,792.91-280,444,997.63

Finding the Fourth Proportional to 515,398,385.24, 711,243,792.91 and 280,444,997.63

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Solution

The fourth proportional to 515,398,385.24, 711,243,792.91 and 280,444,997.63 is: 387,010,843.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,398,385.24 : 711,243,792.91 = 280,444,997.63 : x
  2. Step 2: Convert to fraction form
    515,398,385.24/711,243,792.91 = 280,444,997.63/x
  3. Step 3: Cross multiply
    515,398,385.24x = 711,243,792.91 × 280,444,997.63
  4. Step 4: Simplify right side
    515,398,385.24x = 199,464,763,816,997,152
  5. Step 5: Solve for x
    x = 199,464,763,816,997,152/515,398,385.24
  6. Step 6: Final answer
    x = 387,010,843.51

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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.