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Finding the Fourth Proportional to 1,806,944.95, 2,708,356.78 and 858,972.79

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Solution

The fourth proportional to 1,806,944.95, 2,708,356.78 and 858,972.79 is: 1,287,479.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806,944.95 : 2,708,356.78 = 858,972.79 : x
  2. Step 2: Convert to fraction form
    1,806,944.95/2,708,356.78 = 858,972.79/x
  3. Step 3: Cross multiply
    1,806,944.95x = 2,708,356.78 × 858,972.79
  4. Step 4: Simplify right side
    1,806,944.95x = 2,326,404,779,632.02
  5. Step 5: Solve for x
    x = 2,326,404,779,632.02/1,806,944.95
  6. Step 6: Final answer
    x = 1,287,479.61

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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.