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Finding the Fourth Proportional to 550,779.89, 760,074.16 and 309,061.90

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Solution

The fourth proportional to 550,779.89, 760,074.16 and 309,061.90 is: 426,504.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,779.89 : 760,074.16 = 309,061.90 : x
  2. Step 2: Convert to fraction form
    550,779.89/760,074.16 = 309,061.90/x
  3. Step 3: Cross multiply
    550,779.89x = 760,074.16 × 309,061.90
  4. Step 4: Simplify right side
    550,779.89x = 234,909,958,684.82
  5. Step 5: Solve for x
    x = 234,909,958,684.82/550,779.89
  6. Step 6: Final answer
    x = 426,504.24

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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.