Home / 1,189,818.30-1,784,056.77-390,885.33

Finding the Fourth Proportional to 1,189,818.30, 1,784,056.77 and 390,885.33

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Solution

The fourth proportional to 1,189,818.30, 1,784,056.77 and 390,885.33 is: 586,107.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,818.30 : 1,784,056.77 = 390,885.33 : x
  2. Step 2: Convert to fraction form
    1,189,818.30/1,784,056.77 = 390,885.33/x
  3. Step 3: Cross multiply
    1,189,818.30x = 1,784,056.77 × 390,885.33
  4. Step 4: Simplify right side
    1,189,818.30x = 697,361,619,280.18
  5. Step 5: Solve for x
    x = 697,361,619,280.18/1,189,818.30
  6. Step 6: Final answer
    x = 586,107.66

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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.