Home / 515,398,384.24-711,243,791.53-280,444,996.63

Finding the Fourth Proportional to 515,398,384.24, 711,243,791.53 and 280,444,996.63

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Solution

The fourth proportional to 515,398,384.24, 711,243,791.53 and 280,444,996.63 is: 387,010,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,398,384.24 : 711,243,791.53 = 280,444,996.63 : x
  2. Step 2: Convert to fraction form
    515,398,384.24/711,243,791.53 = 280,444,996.63/x
  3. Step 3: Cross multiply
    515,398,384.24x = 711,243,791.53 × 280,444,996.63
  4. Step 4: Simplify right side
    515,398,384.24x = 199,464,762,718,739,264
  5. Step 5: Solve for x
    x = 199,464,762,718,739,264/515,398,384.24
  6. Step 6: Final answer
    x = 387,010,842.13

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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.