Home / 771,465.30-1,157,382.72-321,936.10

Finding the Fourth Proportional to 771,465.30, 1,157,382.72 and 321,936.10

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Solution

The fourth proportional to 771,465.30, 1,157,382.72 and 321,936.10 is: 482,981.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,465.30 : 1,157,382.72 = 321,936.10 : x
  2. Step 2: Convert to fraction form
    771,465.30/1,157,382.72 = 321,936.10/x
  3. Step 3: Cross multiply
    771,465.30x = 1,157,382.72 × 321,936.10
  4. Step 4: Simplify right side
    771,465.30x = 372,603,279,084.19
  5. Step 5: Solve for x
    x = 372,603,279,084.19/771,465.30
  6. Step 6: Final answer
    x = 482,981.26

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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.