Home / 668,400.60-1,002,600.90-519,101.40

Finding the Fourth Proportional to 668,400.60, 1,002,600.90 and 519,101.40

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Solution

The fourth proportional to 668,400.60, 1,002,600.90 and 519,101.40 is: 778,652.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,400.60 : 1,002,600.90 = 519,101.40 : x
  2. Step 2: Convert to fraction form
    668,400.60/1,002,600.90 = 519,101.40/x
  3. Step 3: Cross multiply
    668,400.60x = 1,002,600.90 × 519,101.40
  4. Step 4: Simplify right side
    668,400.60x = 520,451,530,831.26
  5. Step 5: Solve for x
    x = 520,451,530,831.26/668,400.60
  6. Step 6: Final answer
    x = 778,652.10

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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.