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Finding the Fourth Proportional to 928,260, 1,280,998.80 and 525,852

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Solution

The fourth proportional to 928,260, 1,280,998.80 and 525,852 is: 725,675.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,260 : 1,280,998.80 = 525,852 : x
  2. Step 2: Convert to fraction form
    928,260/1,280,998.80 = 525,852/x
  3. Step 3: Cross multiply
    928,260x = 1,280,998.80 × 525,852
  4. Step 4: Simplify right side
    928,260x = 673,615,780,977.60
  5. Step 5: Solve for x
    x = 673,615,780,977.60/928,260
  6. Step 6: Final answer
    x = 725,675.76

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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.