Home / 1,188,671.52-1,783,008.36-420,740.40

Finding the Fourth Proportional to 1,188,671.52, 1,783,008.36 and 420,740.40

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Solution

The fourth proportional to 1,188,671.52, 1,783,008.36 and 420,740.40 is: 631,110.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,671.52 : 1,783,008.36 = 420,740.40 : x
  2. Step 2: Convert to fraction form
    1,188,671.52/1,783,008.36 = 420,740.40/x
  3. Step 3: Cross multiply
    1,188,671.52x = 1,783,008.36 × 420,740.40
  4. Step 4: Simplify right side
    1,188,671.52x = 750,183,650,589.74
  5. Step 5: Solve for x
    x = 750,183,650,589.74/1,188,671.52
  6. Step 6: Final answer
    x = 631,110.98

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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.