Home / 619,639.20-929,588.40-198,957.60

Finding the Fourth Proportional to 619,639.20, 929,588.40 and 198,957.60

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Solution

The fourth proportional to 619,639.20, 929,588.40 and 198,957.60 is: 298,478.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,639.20 : 929,588.40 = 198,957.60 : x
  2. Step 2: Convert to fraction form
    619,639.20/929,588.40 = 198,957.60/x
  3. Step 3: Cross multiply
    619,639.20x = 929,588.40 × 198,957.60
  4. Step 4: Simplify right side
    619,639.20x = 184,948,677,051.84
  5. Step 5: Solve for x
    x = 184,948,677,051.84/619,639.20
  6. Step 6: Final answer
    x = 298,478.01

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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.