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Finding the Fourth Proportional to 893,401.80, 1,340,102.70 and 294,455.40

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Solution

The fourth proportional to 893,401.80, 1,340,102.70 and 294,455.40 is: 441,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,401.80 : 1,340,102.70 = 294,455.40 : x
  2. Step 2: Convert to fraction form
    893,401.80/1,340,102.70 = 294,455.40/x
  3. Step 3: Cross multiply
    893,401.80x = 1,340,102.70 × 294,455.40
  4. Step 4: Simplify right side
    893,401.80x = 394,600,476,569.58
  5. Step 5: Solve for x
    x = 394,600,476,569.58/893,401.80
  6. Step 6: Final answer
    x = 441,683.10

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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.