Home / 1,119,719.40-1,679,579.10-409,819.20

Finding the Fourth Proportional to 1,119,719.40, 1,679,579.10 and 409,819.20

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Solution

The fourth proportional to 1,119,719.40, 1,679,579.10 and 409,819.20 is: 614,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,719.40 : 1,679,579.10 = 409,819.20 : x
  2. Step 2: Convert to fraction form
    1,119,719.40/1,679,579.10 = 409,819.20/x
  3. Step 3: Cross multiply
    1,119,719.40x = 1,679,579.10 × 409,819.20
  4. Step 4: Simplify right side
    1,119,719.40x = 688,323,763,098.72
  5. Step 5: Solve for x
    x = 688,323,763,098.72/1,119,719.40
  6. Step 6: Final answer
    x = 614,728.80

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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.