Home / 1,512,135.40-2,268,203.10-390,204.40

Finding the Fourth Proportional to 1,512,135.40, 2,268,203.10 and 390,204.40

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Solution

The fourth proportional to 1,512,135.40, 2,268,203.10 and 390,204.40 is: 585,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512,135.40 : 2,268,203.10 = 390,204.40 : x
  2. Step 2: Convert to fraction form
    1,512,135.40/2,268,203.10 = 390,204.40/x
  3. Step 3: Cross multiply
    1,512,135.40x = 2,268,203.10 × 390,204.40
  4. Step 4: Simplify right side
    1,512,135.40x = 885,062,829,713.64
  5. Step 5: Solve for x
    x = 885,062,829,713.64/1,512,135.40
  6. Step 6: Final answer
    x = 585,306.60

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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.