Home / 1,289,863.40-1,933,412.70-490,836.20

Finding the Fourth Proportional to 1,289,863.40, 1,933,412.70 and 490,836.20

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Solution

The fourth proportional to 1,289,863.40, 1,933,412.70 and 490,836.20 is: 735,728.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,863.40 : 1,933,412.70 = 490,836.20 : x
  2. Step 2: Convert to fraction form
    1,289,863.40/1,933,412.70 = 490,836.20/x
  3. Step 3: Cross multiply
    1,289,863.40x = 1,933,412.70 × 490,836.20
  4. Step 4: Simplify right side
    1,289,863.40x = 948,988,942,699.74
  5. Step 5: Solve for x
    x = 948,988,942,699.74/1,289,863.40
  6. Step 6: Final answer
    x = 735,728.25

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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.