Home / 515,925.22-711,966.78-286,470.58

Finding the Fourth Proportional to 515,925.22, 711,966.78 and 286,470.58

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Solution

The fourth proportional to 515,925.22, 711,966.78 and 286,470.58 is: 395,323.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,925.22 : 711,966.78 = 286,470.58 : x
  2. Step 2: Convert to fraction form
    515,925.22/711,966.78 = 286,470.58/x
  3. Step 3: Cross multiply
    515,925.22x = 711,966.78 × 286,470.58
  4. Step 4: Simplify right side
    515,925.22x = 203,957,536,407.33
  5. Step 5: Solve for x
    x = 203,957,536,407.33/515,925.22
  6. Step 6: Final answer
    x = 395,323.83

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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.