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Finding the Fourth Proportional to 640,826.94, 960,399.56 and 471,554.66

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Solution

The fourth proportional to 640,826.94, 960,399.56 and 471,554.66 is: 706,713.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,826.94 : 960,399.56 = 471,554.66 : x
  2. Step 2: Convert to fraction form
    640,826.94/960,399.56 = 471,554.66/x
  3. Step 3: Cross multiply
    640,826.94x = 960,399.56 × 471,554.66
  4. Step 4: Simplify right side
    640,826.94x = 452,880,890,233.59
  5. Step 5: Solve for x
    x = 452,880,890,233.59/640,826.94
  6. Step 6: Final answer
    x = 706,713.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.