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Finding the Fourth Proportional to 530,734.60, 732,396.36 and 289,015.30

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Solution

The fourth proportional to 530,734.60, 732,396.36 and 289,015.30 is: 398,831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,734.60 : 732,396.36 = 289,015.30 : x
  2. Step 2: Convert to fraction form
    530,734.60/732,396.36 = 289,015.30/x
  3. Step 3: Cross multiply
    530,734.60x = 732,396.36 × 289,015.30
  4. Step 4: Simplify right side
    530,734.60x = 211,673,753,704.31
  5. Step 5: Solve for x
    x = 211,673,753,704.31/530,734.60
  6. Step 6: Final answer
    x = 398,831.65

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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.