Home / 428,370.67-642,345.40-175,582.63

Finding the Fourth Proportional to 428,370.67, 642,345.40 and 175,582.63

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Solution

The fourth proportional to 428,370.67, 642,345.40 and 175,582.63 is: 263,287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,370.67 : 642,345.40 = 175,582.63 : x
  2. Step 2: Convert to fraction form
    428,370.67/642,345.40 = 175,582.63/x
  3. Step 3: Cross multiply
    428,370.67x = 642,345.40 × 175,582.63
  4. Step 4: Simplify right side
    428,370.67x = 112,784,694,700.40
  5. Step 5: Solve for x
    x = 112,784,694,700.40/428,370.67
  6. Step 6: Final answer
    x = 263,287.62

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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.