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Finding the Fourth Proportional to 360,483.90, 540,725.85 and 328,991.10

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Solution

The fourth proportional to 360,483.90, 540,725.85 and 328,991.10 is: 493,486.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,483.90 : 540,725.85 = 328,991.10 : x
  2. Step 2: Convert to fraction form
    360,483.90/540,725.85 = 328,991.10/x
  3. Step 3: Cross multiply
    360,483.90x = 540,725.85 × 328,991.10
  4. Step 4: Simplify right side
    360,483.90x = 177,893,992,189.94
  5. Step 5: Solve for x
    x = 177,893,992,189.94/360,483.90
  6. Step 6: Final answer
    x = 493,486.65

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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.