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Finding the Fourth Proportional to 558,039.43, 770,090.62 and 303,390.61

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Solution

The fourth proportional to 558,039.43, 770,090.62 and 303,390.61 is: 418,676.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,039.43 : 770,090.62 = 303,390.61 : x
  2. Step 2: Convert to fraction form
    558,039.43/770,090.62 = 303,390.61/x
  3. Step 3: Cross multiply
    558,039.43x = 770,090.62 × 303,390.61
  4. Step 4: Simplify right side
    558,039.43x = 233,638,264,320.71
  5. Step 5: Solve for x
    x = 233,638,264,320.71/558,039.43
  6. Step 6: Final answer
    x = 418,676.99

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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.