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Finding the Fourth Proportional to 2,579,483.81, 3,869,221.14 and 686,225.24

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Solution

The fourth proportional to 2,579,483.81, 3,869,221.14 and 686,225.24 is: 1,029,336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579,483.81 : 3,869,221.14 = 686,225.24 : x
  2. Step 2: Convert to fraction form
    2,579,483.81/3,869,221.14 = 686,225.24/x
  3. Step 3: Cross multiply
    2,579,483.81x = 3,869,221.14 × 686,225.24
  4. Step 4: Simplify right side
    2,579,483.81x = 2,655,157,205,409.57
  5. Step 5: Solve for x
    x = 2,655,157,205,409.57/2,579,483.81
  6. Step 6: Final answer
    x = 1,029,336.64

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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.