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Finding the Fourth Proportional to 716,864.46, 989,265.06 and 394,567.62

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Solution

The fourth proportional to 716,864.46, 989,265.06 and 394,567.62 is: 544,498.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,864.46 : 989,265.06 = 394,567.62 : x
  2. Step 2: Convert to fraction form
    716,864.46/989,265.06 = 394,567.62/x
  3. Step 3: Cross multiply
    716,864.46x = 989,265.06 × 394,567.62
  4. Step 4: Simplify right side
    716,864.46x = 390,331,960,273.36
  5. Step 5: Solve for x
    x = 390,331,960,273.36/716,864.46
  6. Step 6: Final answer
    x = 544,498.97

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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.