Home / 1,285,868.31-1,925,018.66-858,343.70

Finding the Fourth Proportional to 1,285,868.31, 1,925,018.66 and 858,343.70

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Solution

The fourth proportional to 1,285,868.31, 1,925,018.66 and 858,343.70 is: 1,284,989.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,868.31 : 1,925,018.66 = 858,343.70 : x
  2. Step 2: Convert to fraction form
    1,285,868.31/1,925,018.66 = 858,343.70/x
  3. Step 3: Cross multiply
    1,285,868.31x = 1,925,018.66 × 858,343.70
  4. Step 4: Simplify right side
    1,285,868.31x = 1,652,327,625,276.63
  5. Step 5: Solve for x
    x = 1,652,327,625,276.63/1,285,868.31
  6. Step 6: Final answer
    x = 1,284,989.77

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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.