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Finding the Fourth Proportional to 713,685, 984,885.30 and 395,733

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Solution

The fourth proportional to 713,685, 984,885.30 and 395,733 is: 546,111.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,685 : 984,885.30 = 395,733 : x
  2. Step 2: Convert to fraction form
    713,685/984,885.30 = 395,733/x
  3. Step 3: Cross multiply
    713,685x = 984,885.30 × 395,733
  4. Step 4: Simplify right side
    713,685x = 389,751,614,424.90
  5. Step 5: Solve for x
    x = 389,751,614,424.90/713,685
  6. Step 6: Final answer
    x = 546,111.54

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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.