Home / 509,416.20-764,124.30-273,220.20

Finding the Fourth Proportional to 509,416.20, 764,124.30 and 273,220.20

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Solution

The fourth proportional to 509,416.20, 764,124.30 and 273,220.20 is: 409,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,416.20 : 764,124.30 = 273,220.20 : x
  2. Step 2: Convert to fraction form
    509,416.20/764,124.30 = 273,220.20/x
  3. Step 3: Cross multiply
    509,416.20x = 764,124.30 × 273,220.20
  4. Step 4: Simplify right side
    509,416.20x = 208,774,194,070.86
  5. Step 5: Solve for x
    x = 208,774,194,070.86/509,416.20
  6. Step 6: Final answer
    x = 409,830.30

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Half scale
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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.