Home / 428,519.22-642,686.54-175,551.66

Finding the Fourth Proportional to 428,519.22, 642,686.54 and 175,551.66

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Solution

The fourth proportional to 428,519.22, 642,686.54 and 175,551.66 is: 263,289.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,519.22 : 642,686.54 = 175,551.66 : x
  2. Step 2: Convert to fraction form
    428,519.22/642,686.54 = 175,551.66/x
  3. Step 3: Cross multiply
    428,519.22x = 642,686.54 × 175,551.66
  4. Step 4: Simplify right side
    428,519.22x = 112,824,688,956.66
  5. Step 5: Solve for x
    x = 112,824,688,956.66/428,519.22
  6. Step 6: Final answer
    x = 263,289.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.