Home / 515,699.04-711,661.44-289,344

Finding the Fourth Proportional to 515,699.04, 711,661.44 and 289,344

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Solution

The fourth proportional to 515,699.04, 711,661.44 and 289,344 is: 399,292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,699.04 : 711,661.44 = 289,344 : x
  2. Step 2: Convert to fraction form
    515,699.04/711,661.44 = 289,344/x
  3. Step 3: Cross multiply
    515,699.04x = 711,661.44 × 289,344
  4. Step 4: Simplify right side
    515,699.04x = 205,914,967,695.36
  5. Step 5: Solve for x
    x = 205,914,967,695.36/515,699.04
  6. Step 6: Final answer
    x = 399,292.90

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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.