Home / 771,445.40-1,157,352.86-321,916.21

Finding the Fourth Proportional to 771,445.40, 1,157,352.86 and 321,916.21

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Solution

The fourth proportional to 771,445.40, 1,157,352.86 and 321,916.21 is: 482,951.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,445.40 : 1,157,352.86 = 321,916.21 : x
  2. Step 2: Convert to fraction form
    771,445.40/1,157,352.86 = 321,916.21/x
  3. Step 3: Cross multiply
    771,445.40x = 1,157,352.86 × 321,916.21
  4. Step 4: Simplify right side
    771,445.40x = 372,570,646,323.86
  5. Step 5: Solve for x
    x = 372,570,646,323.86/771,445.40
  6. Step 6: Final answer
    x = 482,951.41

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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.