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Finding the Fourth Proportional to 450,903.90, 623,443.70 and 394,152.47

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Solution

The fourth proportional to 450,903.90, 623,443.70 and 394,152.47 is: 544,976.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,903.90 : 623,443.70 = 394,152.47 : x
  2. Step 2: Convert to fraction form
    450,903.90/623,443.70 = 394,152.47/x
  3. Step 3: Cross multiply
    450,903.90x = 623,443.70 × 394,152.47
  4. Step 4: Simplify right side
    450,903.90x = 245,731,874,260.94
  5. Step 5: Solve for x
    x = 245,731,874,260.94/450,903.90
  6. Step 6: Final answer
    x = 544,976.16

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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.