Home / 638,682.31-956,938.98-385,430.72

Finding the Fourth Proportional to 638,682.31, 956,938.98 and 385,430.72

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Solution

The fourth proportional to 638,682.31, 956,938.98 and 385,430.72 is: 577,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,682.31 : 956,938.98 = 385,430.72 : x
  2. Step 2: Convert to fraction form
    638,682.31/956,938.98 = 385,430.72/x
  3. Step 3: Cross multiply
    638,682.31x = 956,938.98 × 385,430.72
  4. Step 4: Simplify right side
    638,682.31x = 368,833,682,100.92
  5. Step 5: Solve for x
    x = 368,833,682,100.92/638,682.31
  6. Step 6: Final answer
    x = 577,491.62

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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.