Home / 520,868.80-781,303.20-165,918.70

Finding the Fourth Proportional to 520,868.80, 781,303.20 and 165,918.70

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Solution

The fourth proportional to 520,868.80, 781,303.20 and 165,918.70 is: 248,878.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,868.80 : 781,303.20 = 165,918.70 : x
  2. Step 2: Convert to fraction form
    520,868.80/781,303.20 = 165,918.70/x
  3. Step 3: Cross multiply
    520,868.80x = 781,303.20 × 165,918.70
  4. Step 4: Simplify right side
    520,868.80x = 129,632,811,249.84
  5. Step 5: Solve for x
    x = 129,632,811,249.84/520,868.80
  6. Step 6: Final answer
    x = 248,878.05

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Double scale
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Similar ratio
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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.