Home / 519,485.40-779,228.10-220,182.30

Finding the Fourth Proportional to 519,485.40, 779,228.10 and 220,182.30

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Solution

The fourth proportional to 519,485.40, 779,228.10 and 220,182.30 is: 330,273.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,485.40 : 779,228.10 = 220,182.30 : x
  2. Step 2: Convert to fraction form
    519,485.40/779,228.10 = 220,182.30/x
  3. Step 3: Cross multiply
    519,485.40x = 779,228.10 × 220,182.30
  4. Step 4: Simplify right side
    519,485.40x = 171,572,235,282.63
  5. Step 5: Solve for x
    x = 171,572,235,282.63/519,485.40
  6. Step 6: Final answer
    x = 330,273.45

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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.