Home / 1,040,121.40-1,559,145.30-478,175.80

Finding the Fourth Proportional to 1,040,121.40, 1,559,145.30 and 478,175.80

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Solution

The fourth proportional to 1,040,121.40, 1,559,145.30 and 478,175.80 is: 716,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,121.40 : 1,559,145.30 = 478,175.80 : x
  2. Step 2: Convert to fraction form
    1,040,121.40/1,559,145.30 = 478,175.80/x
  3. Step 3: Cross multiply
    1,040,121.40x = 1,559,145.30 × 478,175.80
  4. Step 4: Simplify right side
    1,040,121.40x = 745,545,551,143.74
  5. Step 5: Solve for x
    x = 745,545,551,143.74/1,040,121.40
  6. Step 6: Final answer
    x = 716,787.05

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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.