Home / 515,948.74-711,970.20-289,550.50

Finding the Fourth Proportional to 515,948.74, 711,970.20 and 289,550.50

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Solution

The fourth proportional to 515,948.74, 711,970.20 and 289,550.50 is: 399,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,948.74 : 711,970.20 = 289,550.50 : x
  2. Step 2: Convert to fraction form
    515,948.74/711,970.20 = 289,550.50/x
  3. Step 3: Cross multiply
    515,948.74x = 711,970.20 × 289,550.50
  4. Step 4: Simplify right side
    515,948.74x = 206,151,327,395.10
  5. Step 5: Solve for x
    x = 206,151,327,395.10/515,948.74
  6. Step 6: Final answer
    x = 399,557.77

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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.