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Finding the Fourth Proportional to 643,670.40, 965,966.40 and 362,889.60

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Solution

The fourth proportional to 643,670.40, 965,966.40 and 362,889.60 is: 544,594.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,670.40 : 965,966.40 = 362,889.60 : x
  2. Step 2: Convert to fraction form
    643,670.40/965,966.40 = 362,889.60/x
  3. Step 3: Cross multiply
    643,670.40x = 965,966.40 × 362,889.60
  4. Step 4: Simplify right side
    643,670.40x = 350,539,160,509.44
  5. Step 5: Solve for x
    x = 350,539,160,509.44/643,670.40
  6. Step 6: Final answer
    x = 544,594.19

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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.