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Finding the Fourth Proportional to 987,871.20, 1,363,262 and 535,162.08

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Solution

The fourth proportional to 987,871.20, 1,363,262 and 535,162.08 is: 738,523.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,871.20 : 1,363,262 = 535,162.08 : x
  2. Step 2: Convert to fraction form
    987,871.20/1,363,262 = 535,162.08/x
  3. Step 3: Cross multiply
    987,871.20x = 1,363,262 × 535,162.08
  4. Step 4: Simplify right side
    987,871.20x = 729,566,127,504.96
  5. Step 5: Solve for x
    x = 729,566,127,504.96/987,871.20
  6. Step 6: Final answer
    x = 738,523.53

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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.