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Finding the Fourth Proportional to 1,673,835.30, 2,309,915.68 and 909,905.27

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Solution

The fourth proportional to 1,673,835.30, 2,309,915.68 and 909,905.27 is: 1,255,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673,835.30 : 2,309,915.68 = 909,905.27 : x
  2. Step 2: Convert to fraction form
    1,673,835.30/2,309,915.68 = 909,905.27/x
  3. Step 3: Cross multiply
    1,673,835.30x = 2,309,915.68 × 909,905.27
  4. Step 4: Simplify right side
    1,673,835.30x = 2,101,804,436,663.29
  5. Step 5: Solve for x
    x = 2,101,804,436,663.29/1,673,835.30
  6. Step 6: Final answer
    x = 1,255,681.75

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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.