Home / 765,285.90-1,147,947.75-365,968.86

Finding the Fourth Proportional to 765,285.90, 1,147,947.75 and 365,968.86

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Solution

The fourth proportional to 765,285.90, 1,147,947.75 and 365,968.86 is: 548,962.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,285.90 : 1,147,947.75 = 365,968.86 : x
  2. Step 2: Convert to fraction form
    765,285.90/1,147,947.75 = 365,968.86/x
  3. Step 3: Cross multiply
    765,285.90x = 1,147,947.75 × 365,968.86
  4. Step 4: Simplify right side
    765,285.90x = 420,113,129,407.07
  5. Step 5: Solve for x
    x = 420,113,129,407.07/765,285.90
  6. Step 6: Final answer
    x = 548,962.33

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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.