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Finding the Fourth Proportional to 537,990.79, 742,429.52 and 308,556.94

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Solution

The fourth proportional to 537,990.79, 742,429.52 and 308,556.94 is: 425,809.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,990.79 : 742,429.52 = 308,556.94 : x
  2. Step 2: Convert to fraction form
    537,990.79/742,429.52 = 308,556.94/x
  3. Step 3: Cross multiply
    537,990.79x = 742,429.52 × 308,556.94
  4. Step 4: Simplify right side
    537,990.79x = 229,081,780,856.87
  5. Step 5: Solve for x
    x = 229,081,780,856.87/537,990.79
  6. Step 6: Final answer
    x = 425,809.86

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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.