Home / 690,919.19-953,455.69-376,593.73

Finding the Fourth Proportional to 690,919.19, 953,455.69 and 376,593.73

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Solution

The fourth proportional to 690,919.19, 953,455.69 and 376,593.73 is: 519,692.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,919.19 : 953,455.69 = 376,593.73 : x
  2. Step 2: Convert to fraction form
    690,919.19/953,455.69 = 376,593.73/x
  3. Step 3: Cross multiply
    690,919.19x = 953,455.69 × 376,593.73
  4. Step 4: Simplify right side
    690,919.19x = 359,065,434,686.82
  5. Step 5: Solve for x
    x = 359,065,434,686.82/690,919.19
  6. Step 6: Final answer
    x = 519,692.37

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.