Home / 771,444.40-1,157,351.36-321,915.21

Finding the Fourth Proportional to 771,444.40, 1,157,351.36 and 321,915.21

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Solution

The fourth proportional to 771,444.40, 1,157,351.36 and 321,915.21 is: 482,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,444.40 : 1,157,351.36 = 321,915.21 : x
  2. Step 2: Convert to fraction form
    771,444.40/1,157,351.36 = 321,915.21/x
  3. Step 3: Cross multiply
    771,444.40x = 1,157,351.36 × 321,915.21
  4. Step 4: Simplify right side
    771,444.40x = 372,569,006,098.19
  5. Step 5: Solve for x
    x = 372,569,006,098.19/771,444.40
  6. Step 6: Final answer
    x = 482,949.91

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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.