Home / 771,472.89-1,157,394.02-321,943.68

Finding the Fourth Proportional to 771,472.89, 1,157,394.02 and 321,943.68

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Solution

The fourth proportional to 771,472.89, 1,157,394.02 and 321,943.68 is: 482,992.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,472.89 : 1,157,394.02 = 321,943.68 : x
  2. Step 2: Convert to fraction form
    771,472.89/1,157,394.02 = 321,943.68/x
  3. Step 3: Cross multiply
    771,472.89x = 1,157,394.02 × 321,943.68
  4. Step 4: Simplify right side
    771,472.89x = 372,615,688,399.08
  5. Step 5: Solve for x
    x = 372,615,688,399.08/771,472.89
  6. Step 6: Final answer
    x = 482,992.59

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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.