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Finding the Fourth Proportional to 515,483.07, 711,370.67 and 286,041.26

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Solution

The fourth proportional to 515,483.07, 711,370.67 and 286,041.26 is: 394,739.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,483.07 : 711,370.67 = 286,041.26 : x
  2. Step 2: Convert to fraction form
    515,483.07/711,370.67 = 286,041.26/x
  3. Step 3: Cross multiply
    515,483.07x = 711,370.67 × 286,041.26
  4. Step 4: Simplify right side
    515,483.07x = 203,481,357,786.79
  5. Step 5: Solve for x
    x = 203,481,357,786.79/515,483.07
  6. Step 6: Final answer
    x = 394,739.17

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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.