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Finding the Fourth Proportional to 1,526,991.70, 2,289,978.91 and 615,938.86

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Solution

The fourth proportional to 1,526,991.70, 2,289,978.91 and 615,938.86 is: 923,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526,991.70 : 2,289,978.91 = 615,938.86 : x
  2. Step 2: Convert to fraction form
    1,526,991.70/2,289,978.91 = 615,938.86/x
  3. Step 3: Cross multiply
    1,526,991.70x = 2,289,978.91 × 615,938.86
  4. Step 4: Simplify right side
    1,526,991.70x = 1,410,486,999,249.44
  5. Step 5: Solve for x
    x = 1,410,486,999,249.44/1,526,991.70
  6. Step 6: Final answer
    x = 923,703.12

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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.