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Finding the Fourth Proportional to 2,153,319.89, 2,971,648.74 and 1,235,716.89

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Solution

The fourth proportional to 2,153,319.89, 2,971,648.74 and 1,235,716.89 is: 1,705,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153,319.89 : 2,971,648.74 = 1,235,716.89 : x
  2. Step 2: Convert to fraction form
    2,153,319.89/2,971,648.74 = 1,235,716.89/x
  3. Step 3: Cross multiply
    2,153,319.89x = 2,971,648.74 × 1,235,716.89
  4. Step 4: Simplify right side
    2,153,319.89x = 3,672,116,539,165.22
  5. Step 5: Solve for x
    x = 3,672,116,539,165.22/2,153,319.89
  6. Step 6: Final answer
    x = 1,705,327.92

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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.