Home / 1,328,724-1,993,086-430,916.76

Finding the Fourth Proportional to 1,328,724, 1,993,086 and 430,916.76

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Solution

The fourth proportional to 1,328,724, 1,993,086 and 430,916.76 is: 646,375.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,724 : 1,993,086 = 430,916.76 : x
  2. Step 2: Convert to fraction form
    1,328,724/1,993,086 = 430,916.76/x
  3. Step 3: Cross multiply
    1,328,724x = 1,993,086 × 430,916.76
  4. Step 4: Simplify right side
    1,328,724x = 858,854,161,521.36
  5. Step 5: Solve for x
    x = 858,854,161,521.36/1,328,724
  6. Step 6: Final answer
    x = 646,375.14

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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.