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Finding the Fourth Proportional to 704,037.74, 971,570.85 and 393,940.58

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Solution

The fourth proportional to 704,037.74, 971,570.85 and 393,940.58 is: 543,637.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,037.74 : 971,570.85 = 393,940.58 : x
  2. Step 2: Convert to fraction form
    704,037.74/971,570.85 = 393,940.58/x
  3. Step 3: Cross multiply
    704,037.74x = 971,570.85 × 393,940.58
  4. Step 4: Simplify right side
    704,037.74x = 382,741,184,160.09
  5. Step 5: Solve for x
    x = 382,741,184,160.09/704,037.74
  6. Step 6: Final answer
    x = 543,637.31

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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.