Home / 550,421.61-759,572.69-321,112.23

Finding the Fourth Proportional to 550,421.61, 759,572.69 and 321,112.23

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Solution

The fourth proportional to 550,421.61, 759,572.69 and 321,112.23 is: 443,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,421.61 : 759,572.69 = 321,112.23 : x
  2. Step 2: Convert to fraction form
    550,421.61/759,572.69 = 321,112.23/x
  3. Step 3: Cross multiply
    550,421.61x = 759,572.69 × 321,112.23
  4. Step 4: Simplify right side
    550,421.61x = 243,908,078,727.44
  5. Step 5: Solve for x
    x = 243,908,078,727.44/550,421.61
  6. Step 6: Final answer
    x = 443,129.55

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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.