Home / 771,443.40-1,157,349.86-321,914.21

Finding the Fourth Proportional to 771,443.40, 1,157,349.86 and 321,914.21

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Solution

The fourth proportional to 771,443.40, 1,157,349.86 and 321,914.21 is: 482,948.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,443.40 : 1,157,349.86 = 321,914.21 : x
  2. Step 2: Convert to fraction form
    771,443.40/1,157,349.86 = 321,914.21/x
  3. Step 3: Cross multiply
    771,443.40x = 1,157,349.86 × 321,914.21
  4. Step 4: Simplify right side
    771,443.40x = 372,567,366,800.05
  5. Step 5: Solve for x
    x = 372,567,366,800.05/771,443.40
  6. Step 6: Final answer
    x = 482,948.41

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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.