Home / 930,939.60-1,396,409.40-331,920.30

Finding the Fourth Proportional to 930,939.60, 1,396,409.40 and 331,920.30

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Solution

The fourth proportional to 930,939.60, 1,396,409.40 and 331,920.30 is: 497,880.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,939.60 : 1,396,409.40 = 331,920.30 : x
  2. Step 2: Convert to fraction form
    930,939.60/1,396,409.40 = 331,920.30/x
  3. Step 3: Cross multiply
    930,939.60x = 1,396,409.40 × 331,920.30
  4. Step 4: Simplify right side
    930,939.60x = 463,496,626,970.82
  5. Step 5: Solve for x
    x = 463,496,626,970.82/930,939.60
  6. Step 6: Final answer
    x = 497,880.45

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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.