Home / 509,961.20-763,386.60-298,972.40

Finding the Fourth Proportional to 509,961.20, 763,386.60 and 298,972.40

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Solution

The fourth proportional to 509,961.20, 763,386.60 and 298,972.40 is: 447,546.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,961.20 : 763,386.60 = 298,972.40 : x
  2. Step 2: Convert to fraction form
    509,961.20/763,386.60 = 298,972.40/x
  3. Step 3: Cross multiply
    509,961.20x = 763,386.60 × 298,972.40
  4. Step 4: Simplify right side
    509,961.20x = 228,231,523,929.84
  5. Step 5: Solve for x
    x = 228,231,523,929.84/509,961.20
  6. Step 6: Final answer
    x = 447,546.84

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Double scale
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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.