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Finding the Fourth Proportional to 1,490,902.83, 2,056,905.63 and 845,949.51

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Solution

The fourth proportional to 1,490,902.83, 2,056,905.63 and 845,949.51 is: 1,167,103.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,902.83 : 2,056,905.63 = 845,949.51 : x
  2. Step 2: Convert to fraction form
    1,490,902.83/2,056,905.63 = 845,949.51/x
  3. Step 3: Cross multiply
    1,490,902.83x = 2,056,905.63 × 845,949.51
  4. Step 4: Simplify right side
    1,490,902.83x = 1,740,038,309,814.74
  5. Step 5: Solve for x
    x = 1,740,038,309,814.74/1,490,902.83
  6. Step 6: Final answer
    x = 1,167,103.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.