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Finding the Fourth Proportional to 909,930.70, 1,364,896.05 and 898,120.90

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Solution

The fourth proportional to 909,930.70, 1,364,896.05 and 898,120.90 is: 1,347,181.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,930.70 : 1,364,896.05 = 898,120.90 : x
  2. Step 2: Convert to fraction form
    909,930.70/1,364,896.05 = 898,120.90/x
  3. Step 3: Cross multiply
    909,930.70x = 1,364,896.05 × 898,120.90
  4. Step 4: Simplify right side
    909,930.70x = 1,225,841,668,832.45
  5. Step 5: Solve for x
    x = 1,225,841,668,832.45/909,930.70
  6. Step 6: Final answer
    x = 1,347,181.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.