Home / 579,280.17-799,431.90-321,140.69

Finding the Fourth Proportional to 579,280.17, 799,431.90 and 321,140.69

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Solution

The fourth proportional to 579,280.17, 799,431.90 and 321,140.69 is: 443,188.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,280.17 : 799,431.90 = 321,140.69 : x
  2. Step 2: Convert to fraction form
    579,280.17/799,431.90 = 321,140.69/x
  3. Step 3: Cross multiply
    579,280.17x = 799,431.90 × 321,140.69
  4. Step 4: Simplify right side
    579,280.17x = 256,730,107,976.85
  5. Step 5: Solve for x
    x = 256,730,107,976.85/579,280.17
  6. Step 6: Final answer
    x = 443,188.15

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1.5x scale

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.