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Finding the Fourth Proportional to 670,441.80, 1,005,662.70 and 249,630.60

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Solution

The fourth proportional to 670,441.80, 1,005,662.70 and 249,630.60 is: 374,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,441.80 : 1,005,662.70 = 249,630.60 : x
  2. Step 2: Convert to fraction form
    670,441.80/1,005,662.70 = 249,630.60/x
  3. Step 3: Cross multiply
    670,441.80x = 1,005,662.70 × 249,630.60
  4. Step 4: Simplify right side
    670,441.80x = 251,044,183,198.62
  5. Step 5: Solve for x
    x = 251,044,183,198.62/670,441.80
  6. Step 6: Final answer
    x = 374,445.90

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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.