Home / 515,749.20-711,698.22-286,288.44

Finding the Fourth Proportional to 515,749.20, 711,698.22 and 286,288.44

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Solution

The fourth proportional to 515,749.20, 711,698.22 and 286,288.44 is: 395,058.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,749.20 : 711,698.22 = 286,288.44 : x
  2. Step 2: Convert to fraction form
    515,749.20/711,698.22 = 286,288.44/x
  3. Step 3: Cross multiply
    515,749.20x = 711,698.22 × 286,288.44
  4. Step 4: Simplify right side
    515,749.20x = 203,750,973,154.58
  5. Step 5: Solve for x
    x = 203,750,973,154.58/515,749.20
  6. Step 6: Final answer
    x = 395,058.24

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1.5x scale

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.