Home / 781,118.81-1,170,531.91-440,225.88

Finding the Fourth Proportional to 781,118.81, 1,170,531.91 and 440,225.88

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Solution

The fourth proportional to 781,118.81, 1,170,531.91 and 440,225.88 is: 659,692.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,118.81 : 1,170,531.91 = 440,225.88 : x
  2. Step 2: Convert to fraction form
    781,118.81/1,170,531.91 = 440,225.88/x
  3. Step 3: Cross multiply
    781,118.81x = 1,170,531.91 × 440,225.88
  4. Step 4: Simplify right side
    781,118.81x = 515,298,435,020.37
  5. Step 5: Solve for x
    x = 515,298,435,020.37/781,118.81
  6. Step 6: Final answer
    x = 659,692.77

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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.