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Finding the Fourth Proportional to 890,660.05, 1,335,978.53 and 216,741.77

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Solution

The fourth proportional to 890,660.05, 1,335,978.53 and 216,741.77 is: 325,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,660.05 : 1,335,978.53 = 216,741.77 : x
  2. Step 2: Convert to fraction form
    890,660.05/1,335,978.53 = 216,741.77/x
  3. Step 3: Cross multiply
    890,660.05x = 1,335,978.53 × 216,741.77
  4. Step 4: Simplify right side
    890,660.05x = 289,562,355,156.00
  5. Step 5: Solve for x
    x = 289,562,355,156.00/890,660.05
  6. Step 6: Final answer
    x = 325,109.85

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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.