Home / 515,795.20-711,749.76-289,399.04

Finding the Fourth Proportional to 515,795.20, 711,749.76 and 289,399.04

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Solution

The fourth proportional to 515,795.20, 711,749.76 and 289,399.04 is: 399,343.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,795.20 : 711,749.76 = 289,399.04 : x
  2. Step 2: Convert to fraction form
    515,795.20/711,749.76 = 289,399.04/x
  3. Step 3: Cross multiply
    515,795.20x = 711,749.76 × 289,399.04
  4. Step 4: Simplify right side
    515,795.20x = 205,979,697,264.23
  5. Step 5: Solve for x
    x = 205,979,697,264.23/515,795.20
  6. Step 6: Final answer
    x = 399,343.96

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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.