Home / 739,105.84-1,019,965.80-399,574

Finding the Fourth Proportional to 739,105.84, 1,019,965.80 and 399,574

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Solution

The fourth proportional to 739,105.84, 1,019,965.80 and 399,574 is: 551,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,105.84 : 1,019,965.80 = 399,574 : x
  2. Step 2: Convert to fraction form
    739,105.84/1,019,965.80 = 399,574/x
  3. Step 3: Cross multiply
    739,105.84x = 1,019,965.80 × 399,574
  4. Step 4: Simplify right side
    739,105.84x = 407,551,814,569.20
  5. Step 5: Solve for x
    x = 407,551,814,569.20/739,105.84
  6. Step 6: Final answer
    x = 551,411.98

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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.