Home / 855,187.20-1,282,780.80-455,622.30

Finding the Fourth Proportional to 855,187.20, 1,282,780.80 and 455,622.30

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Solution

The fourth proportional to 855,187.20, 1,282,780.80 and 455,622.30 is: 683,433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,187.20 : 1,282,780.80 = 455,622.30 : x
  2. Step 2: Convert to fraction form
    855,187.20/1,282,780.80 = 455,622.30/x
  3. Step 3: Cross multiply
    855,187.20x = 1,282,780.80 × 455,622.30
  4. Step 4: Simplify right side
    855,187.20x = 584,463,538,491.84
  5. Step 5: Solve for x
    x = 584,463,538,491.84/855,187.20
  6. Step 6: Final answer
    x = 683,433.45

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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.