Home / 764,090.70-1,146,070.02-258,640.86

Finding the Fourth Proportional to 764,090.70, 1,146,070.02 and 258,640.86

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Solution

The fourth proportional to 764,090.70, 1,146,070.02 and 258,640.86 is: 387,938.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,090.70 : 1,146,070.02 = 258,640.86 : x
  2. Step 2: Convert to fraction form
    764,090.70/1,146,070.02 = 258,640.86/x
  3. Step 3: Cross multiply
    764,090.70x = 1,146,070.02 × 258,640.86
  4. Step 4: Simplify right side
    764,090.70x = 296,420,535,593.02
  5. Step 5: Solve for x
    x = 296,420,535,593.02/764,090.70
  6. Step 6: Final answer
    x = 387,938.94

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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.