Home / 1,142,144.19-1,713,220.11-289,215.42

Finding the Fourth Proportional to 1,142,144.19, 1,713,220.11 and 289,215.42

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Solution

The fourth proportional to 1,142,144.19, 1,713,220.11 and 289,215.42 is: 433,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,144.19 : 1,713,220.11 = 289,215.42 : x
  2. Step 2: Convert to fraction form
    1,142,144.19/1,713,220.11 = 289,215.42/x
  3. Step 3: Cross multiply
    1,142,144.19x = 1,713,220.11 × 289,215.42
  4. Step 4: Simplify right side
    1,142,144.19x = 495,489,673,666.10
  5. Step 5: Solve for x
    x = 495,489,673,666.10/1,142,144.19
  6. Step 6: Final answer
    x = 433,824.10

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Half scale
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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.