Home / 687,809.40-1,031,893.02-261,353.40

Finding the Fourth Proportional to 687,809.40, 1,031,893.02 and 261,353.40

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Solution

The fourth proportional to 687,809.40, 1,031,893.02 and 261,353.40 is: 392,098.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,809.40 : 1,031,893.02 = 261,353.40 : x
  2. Step 2: Convert to fraction form
    687,809.40/1,031,893.02 = 261,353.40/x
  3. Step 3: Cross multiply
    687,809.40x = 1,031,893.02 × 261,353.40
  4. Step 4: Simplify right side
    687,809.40x = 269,688,749,213.27
  5. Step 5: Solve for x
    x = 269,688,749,213.27/687,809.40
  6. Step 6: Final answer
    x = 392,098.09

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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.