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Finding the Fourth Proportional to 515,617.48, 711,637.62 and 300,757.59

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Solution

The fourth proportional to 515,617.48, 711,637.62 and 300,757.59 is: 415,095.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,617.48 : 711,637.62 = 300,757.59 : x
  2. Step 2: Convert to fraction form
    515,617.48/711,637.62 = 300,757.59/x
  3. Step 3: Cross multiply
    515,617.48x = 711,637.62 × 300,757.59
  4. Step 4: Simplify right side
    515,617.48x = 214,030,415,544.54
  5. Step 5: Solve for x
    x = 214,030,415,544.54/515,617.48
  6. Step 6: Final answer
    x = 415,095.34

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1.5x scale

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.