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Finding the Fourth Proportional to 611,580.42, 844,009.20 and 339,649.50

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Solution

The fourth proportional to 611,580.42, 844,009.20 and 339,649.50 is: 468,731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,580.42 : 844,009.20 = 339,649.50 : x
  2. Step 2: Convert to fraction form
    611,580.42/844,009.20 = 339,649.50/x
  3. Step 3: Cross multiply
    611,580.42x = 844,009.20 × 339,649.50
  4. Step 4: Simplify right side
    611,580.42x = 286,667,302,775.40
  5. Step 5: Solve for x
    x = 286,667,302,775.40/611,580.42
  6. Step 6: Final answer
    x = 468,731.98

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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.