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Finding the Fourth Proportional to 713,689, 984,890.82 and 395,737

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Solution

The fourth proportional to 713,689, 984,890.82 and 395,737 is: 546,117.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,689 : 984,890.82 = 395,737 : x
  2. Step 2: Convert to fraction form
    713,689/984,890.82 = 395,737/x
  3. Step 3: Cross multiply
    713,689x = 984,890.82 × 395,737
  4. Step 4: Simplify right side
    713,689x = 389,757,738,434.34
  5. Step 5: Solve for x
    x = 389,757,738,434.34/713,689
  6. Step 6: Final answer
    x = 546,117.06

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1.5x scale

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.