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Finding the Fourth Proportional to 1,786,579.12, 2,465,494.76 and 970,782.81

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Solution

The fourth proportional to 1,786,579.12, 2,465,494.76 and 970,782.81 is: 1,339,688.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,579.12 : 2,465,494.76 = 970,782.81 : x
  2. Step 2: Convert to fraction form
    1,786,579.12/2,465,494.76 = 970,782.81/x
  3. Step 3: Cross multiply
    1,786,579.12x = 2,465,494.76 × 970,782.81
  4. Step 4: Simplify right side
    1,786,579.12x = 2,393,459,926,299.16
  5. Step 5: Solve for x
    x = 2,393,459,926,299.16/1,786,579.12
  6. Step 6: Final answer
    x = 1,339,688.74

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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.