Home / 1,119,745.40-1,679,618.10-409,845.20

Finding the Fourth Proportional to 1,119,745.40, 1,679,618.10 and 409,845.20

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Solution

The fourth proportional to 1,119,745.40, 1,679,618.10 and 409,845.20 is: 614,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,745.40 : 1,679,618.10 = 409,845.20 : x
  2. Step 2: Convert to fraction form
    1,119,745.40/1,679,618.10 = 409,845.20/x
  3. Step 3: Cross multiply
    1,119,745.40x = 1,679,618.10 × 409,845.20
  4. Step 4: Simplify right side
    1,119,745.40x = 688,383,416,118.12
  5. Step 5: Solve for x
    x = 688,383,416,118.12/1,119,745.40
  6. Step 6: Final answer
    x = 614,767.80

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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.