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Finding the Fourth Proportional to 1,144,916.59, 1,725,604.42 and 986,899.70

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Solution

The fourth proportional to 1,144,916.59, 1,725,604.42 and 986,899.70 is: 1,487,443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144,916.59 : 1,725,604.42 = 986,899.70 : x
  2. Step 2: Convert to fraction form
    1,144,916.59/1,725,604.42 = 986,899.70/x
  3. Step 3: Cross multiply
    1,144,916.59x = 1,725,604.42 × 986,899.70
  4. Step 4: Simplify right side
    1,144,916.59x = 1,702,998,484,416.67
  5. Step 5: Solve for x
    x = 1,702,998,484,416.67/1,144,916.59
  6. Step 6: Final answer
    x = 1,487,443.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.