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Finding the Fourth Proportional to 566,742.30, 781,906.55 and 321,697.86

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Solution

The fourth proportional to 566,742.30, 781,906.55 and 321,697.86 is: 443,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,742.30 : 781,906.55 = 321,697.86 : x
  2. Step 2: Convert to fraction form
    566,742.30/781,906.55 = 321,697.86/x
  3. Step 3: Cross multiply
    566,742.30x = 781,906.55 × 321,697.86
  4. Step 4: Simplify right side
    566,742.30x = 251,537,662,246.49
  5. Step 5: Solve for x
    x = 251,537,662,246.49/566,742.30
  6. Step 6: Final answer
    x = 443,830.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.