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Finding the Fourth Proportional to 624,721.74, 862,100.19 and 349,081.98

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Solution

The fourth proportional to 624,721.74, 862,100.19 and 349,081.98 is: 481,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,721.74 : 862,100.19 = 349,081.98 : x
  2. Step 2: Convert to fraction form
    624,721.74/862,100.19 = 349,081.98/x
  3. Step 3: Cross multiply
    624,721.74x = 862,100.19 × 349,081.98
  4. Step 4: Simplify right side
    624,721.74x = 300,943,641,283.58
  5. Step 5: Solve for x
    x = 300,943,641,283.58/624,721.74
  6. Step 6: Final answer
    x = 481,724.30

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1.5x scale

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.