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Finding the Fourth Proportional to 1,207,881, 1,812,411.96 and 855,161.64

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Solution

The fourth proportional to 1,207,881, 1,812,411.96 and 855,161.64 is: 1,283,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,881 : 1,812,411.96 = 855,161.64 : x
  2. Step 2: Convert to fraction form
    1,207,881/1,812,411.96 = 855,161.64/x
  3. Step 3: Cross multiply
    1,207,881x = 1,812,411.96 × 855,161.64
  4. Step 4: Simplify right side
    1,207,881x = 1,549,905,184,069.21
  5. Step 5: Solve for x
    x = 1,549,905,184,069.21/1,207,881
  6. Step 6: Final answer
    x = 1,283,160.50

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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.