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Finding the Fourth Proportional to 1,104,389.80, 1,656,584.70 and 988,916.20

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Solution

The fourth proportional to 1,104,389.80, 1,656,584.70 and 988,916.20 is: 1,483,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104,389.80 : 1,656,584.70 = 988,916.20 : x
  2. Step 2: Convert to fraction form
    1,104,389.80/1,656,584.70 = 988,916.20/x
  3. Step 3: Cross multiply
    1,104,389.80x = 1,656,584.70 × 988,916.20
  4. Step 4: Simplify right side
    1,104,389.80x = 1,638,223,446,502.14
  5. Step 5: Solve for x
    x = 1,638,223,446,502.14/1,104,389.80
  6. Step 6: Final answer
    x = 1,483,374.30

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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.