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Finding the Fourth Proportional to 739,103.84, 1,019,963.04 and 399,572

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Solution

The fourth proportional to 739,103.84, 1,019,963.04 and 399,572 is: 551,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,103.84 : 1,019,963.04 = 399,572 : x
  2. Step 2: Convert to fraction form
    739,103.84/1,019,963.04 = 399,572/x
  3. Step 3: Cross multiply
    739,103.84x = 1,019,963.04 × 399,572
  4. Step 4: Simplify right side
    739,103.84x = 407,548,671,818.88
  5. Step 5: Solve for x
    x = 407,548,671,818.88/739,103.84
  6. Step 6: Final answer
    x = 551,409.22

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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.