Home / 1,503,136.80-2,254,705.20-438,213.60

Finding the Fourth Proportional to 1,503,136.80, 2,254,705.20 and 438,213.60

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Solution

The fourth proportional to 1,503,136.80, 2,254,705.20 and 438,213.60 is: 657,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503,136.80 : 2,254,705.20 = 438,213.60 : x
  2. Step 2: Convert to fraction form
    1,503,136.80/2,254,705.20 = 438,213.60/x
  3. Step 3: Cross multiply
    1,503,136.80x = 2,254,705.20 × 438,213.60
  4. Step 4: Simplify right side
    1,503,136.80x = 988,042,482,630.72
  5. Step 5: Solve for x
    x = 988,042,482,630.72/1,503,136.80
  6. Step 6: Final answer
    x = 657,320.40

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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.