Home / 738,286.40-1,107,429.60-402,363.20

Finding the Fourth Proportional to 738,286.40, 1,107,429.60 and 402,363.20

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Solution

The fourth proportional to 738,286.40, 1,107,429.60 and 402,363.20 is: 603,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,286.40 : 1,107,429.60 = 402,363.20 : x
  2. Step 2: Convert to fraction form
    738,286.40/1,107,429.60 = 402,363.20/x
  3. Step 3: Cross multiply
    738,286.40x = 1,107,429.60 × 402,363.20
  4. Step 4: Simplify right side
    738,286.40x = 445,588,917,630.72
  5. Step 5: Solve for x
    x = 445,588,917,630.72/738,286.40
  6. Step 6: Final answer
    x = 603,544.80

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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.