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Finding the Fourth Proportional to 549,627.80, 824,441.70 and 407,910.20

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Solution

The fourth proportional to 549,627.80, 824,441.70 and 407,910.20 is: 611,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,627.80 : 824,441.70 = 407,910.20 : x
  2. Step 2: Convert to fraction form
    549,627.80/824,441.70 = 407,910.20/x
  3. Step 3: Cross multiply
    549,627.80x = 824,441.70 × 407,910.20
  4. Step 4: Simplify right side
    549,627.80x = 336,298,178,735.34
  5. Step 5: Solve for x
    x = 336,298,178,735.34/549,627.80
  6. Step 6: Final answer
    x = 611,865.30

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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.