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Finding the Fourth Proportional to 429,963.60, 644,945.40 and 370,914.60

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Solution

The fourth proportional to 429,963.60, 644,945.40 and 370,914.60 is: 556,371.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,963.60 : 644,945.40 = 370,914.60 : x
  2. Step 2: Convert to fraction form
    429,963.60/644,945.40 = 370,914.60/x
  3. Step 3: Cross multiply
    429,963.60x = 644,945.40 × 370,914.60
  4. Step 4: Simplify right side
    429,963.60x = 239,219,665,062.84
  5. Step 5: Solve for x
    x = 239,219,665,062.84/429,963.60
  6. Step 6: Final answer
    x = 556,371.90

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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.