Home / 771,443.39-1,157,348.55-321,914.45

Finding the Fourth Proportional to 771,443.39, 1,157,348.55 and 321,914.45

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Solution

The fourth proportional to 771,443.39, 1,157,348.55 and 321,914.45 is: 482,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,443.39 : 1,157,348.55 = 321,914.45 : x
  2. Step 2: Convert to fraction form
    771,443.39/1,157,348.55 = 321,914.45/x
  3. Step 3: Cross multiply
    771,443.39x = 1,157,348.55 × 321,914.45
  4. Step 4: Simplify right side
    771,443.39x = 372,567,221,931.55
  5. Step 5: Solve for x
    x = 372,567,221,931.55/771,443.39
  6. Step 6: Final answer
    x = 482,948.23

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Double scale
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1.5x scale

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.