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Finding the Fourth Proportional to 579,760, 869,629.74 and 238,129.46

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Solution

The fourth proportional to 579,760, 869,629.74 and 238,129.46 is: 357,189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,760 : 869,629.74 = 238,129.46 : x
  2. Step 2: Convert to fraction form
    579,760/869,629.74 = 238,129.46/x
  3. Step 3: Cross multiply
    579,760x = 869,629.74 × 238,129.46
  4. Step 4: Simplify right side
    579,760x = 207,084,460,386.14
  5. Step 5: Solve for x
    x = 207,084,460,386.14/579,760
  6. Step 6: Final answer
    x = 357,189.98

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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.