Home / 515,627.04-711,562.32-289,272

Finding the Fourth Proportional to 515,627.04, 711,562.32 and 289,272

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Solution

The fourth proportional to 515,627.04, 711,562.32 and 289,272 is: 399,193.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,627.04 : 711,562.32 = 289,272 : x
  2. Step 2: Convert to fraction form
    515,627.04/711,562.32 = 289,272/x
  3. Step 3: Cross multiply
    515,627.04x = 711,562.32 × 289,272
  4. Step 4: Simplify right side
    515,627.04x = 205,835,055,431.04
  5. Step 5: Solve for x
    x = 205,835,055,431.04/515,627.04
  6. Step 6: Final answer
    x = 399,193.68

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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.