Home / 390,635,132.63-538,831,276.62-231,752,769.48

Finding the Fourth Proportional to 390,635,132.63, 538,831,276.62 and 231,752,769.48

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Solution

The fourth proportional to 390,635,132.63, 538,831,276.62 and 231,752,769.48 is: 319,673,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,635,132.63 : 538,831,276.62 = 231,752,769.48 : x
  2. Step 2: Convert to fraction form
    390,635,132.63/538,831,276.62 = 231,752,769.48/x
  3. Step 3: Cross multiply
    390,635,132.63x = 538,831,276.62 × 231,752,769.48
  4. Step 4: Simplify right side
    390,635,132.63x = 124,875,640,639,128,976
  5. Step 5: Solve for x
    x = 124,875,640,639,128,976/390,635,132.63
  6. Step 6: Final answer
    x = 319,673,347.86

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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.