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Finding the Fourth Proportional to 623,970.40, 861,079.22 and 337,490.50

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Solution

The fourth proportional to 623,970.40, 861,079.22 and 337,490.50 is: 465,736.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,970.40 : 861,079.22 = 337,490.50 : x
  2. Step 2: Convert to fraction form
    623,970.40/861,079.22 = 337,490.50/x
  3. Step 3: Cross multiply
    623,970.40x = 861,079.22 × 337,490.50
  4. Step 4: Simplify right side
    623,970.40x = 290,606,056,497.41
  5. Step 5: Solve for x
    x = 290,606,056,497.41/623,970.40
  6. Step 6: Final answer
    x = 465,736.93

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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.