Home / 930,305.40-1,395,458.10-256,385.40

Finding the Fourth Proportional to 930,305.40, 1,395,458.10 and 256,385.40

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Solution

The fourth proportional to 930,305.40, 1,395,458.10 and 256,385.40 is: 384,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,305.40 : 1,395,458.10 = 256,385.40 : x
  2. Step 2: Convert to fraction form
    930,305.40/1,395,458.10 = 256,385.40/x
  3. Step 3: Cross multiply
    930,305.40x = 1,395,458.10 × 256,385.40
  4. Step 4: Simplify right side
    930,305.40x = 357,775,083,151.74
  5. Step 5: Solve for x
    x = 357,775,083,151.74/930,305.40
  6. Step 6: Final answer
    x = 384,578.10

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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.