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Finding the Fourth Proportional to 2,085,978.47, 3,130,284 and 887,898.86

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Solution

The fourth proportional to 2,085,978.47, 3,130,284 and 887,898.86 is: 1,332,408.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085,978.47 : 3,130,284 = 887,898.86 : x
  2. Step 2: Convert to fraction form
    2,085,978.47/3,130,284 = 887,898.86/x
  3. Step 3: Cross multiply
    2,085,978.47x = 3,130,284 × 887,898.86
  4. Step 4: Simplify right side
    2,085,978.47x = 2,779,375,595,076.24
  5. Step 5: Solve for x
    x = 2,779,375,595,076.24/2,085,978.47
  6. Step 6: Final answer
    x = 1,332,408.57

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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.