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Finding the Fourth Proportional to 1,870,916.40, 2,802,227.40 and 1,124,420.40

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Solution

The fourth proportional to 1,870,916.40, 2,802,227.40 and 1,124,420.40 is: 1,684,138.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870,916.40 : 2,802,227.40 = 1,124,420.40 : x
  2. Step 2: Convert to fraction form
    1,870,916.40/2,802,227.40 = 1,124,420.40/x
  3. Step 3: Cross multiply
    1,870,916.40x = 2,802,227.40 × 1,124,420.40
  4. Step 4: Simplify right side
    1,870,916.40x = 3,150,881,653,998.96
  5. Step 5: Solve for x
    x = 3,150,881,653,998.96/1,870,916.40
  6. Step 6: Final answer
    x = 1,684,138.13

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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.