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Finding the Fourth Proportional to 708,957.74, 978,689.31 and 437,074.22

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Solution

The fourth proportional to 708,957.74, 978,689.31 and 437,074.22 is: 603,364.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,957.74 : 978,689.31 = 437,074.22 : x
  2. Step 2: Convert to fraction form
    708,957.74/978,689.31 = 437,074.22/x
  3. Step 3: Cross multiply
    708,957.74x = 978,689.31 × 437,074.22
  4. Step 4: Simplify right side
    708,957.74x = 427,759,866,790.59
  5. Step 5: Solve for x
    x = 427,759,866,790.59/708,957.74
  6. Step 6: Final answer
    x = 603,364.41

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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.