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Finding the Fourth Proportional to 670,700.60, 1,006,050.90 and 221,490.80

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Solution

The fourth proportional to 670,700.60, 1,006,050.90 and 221,490.80 is: 332,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,700.60 : 1,006,050.90 = 221,490.80 : x
  2. Step 2: Convert to fraction form
    670,700.60/1,006,050.90 = 221,490.80/x
  3. Step 3: Cross multiply
    670,700.60x = 1,006,050.90 × 221,490.80
  4. Step 4: Simplify right side
    670,700.60x = 222,831,018,681.72
  5. Step 5: Solve for x
    x = 222,831,018,681.72/670,700.60
  6. Step 6: Final answer
    x = 332,236.20

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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.