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Finding the Fourth Proportional to 1,354,862.76, 1,869,736.29 and 742,976.67

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Solution

The fourth proportional to 1,354,862.76, 1,869,736.29 and 742,976.67 is: 1,025,321.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,862.76 : 1,869,736.29 = 742,976.67 : x
  2. Step 2: Convert to fraction form
    1,354,862.76/1,869,736.29 = 742,976.67/x
  3. Step 3: Cross multiply
    1,354,862.76x = 1,869,736.29 × 742,976.67
  4. Step 4: Simplify right side
    1,354,862.76x = 1,389,170,442,522.35
  5. Step 5: Solve for x
    x = 1,389,170,442,522.35/1,354,862.76
  6. Step 6: Final answer
    x = 1,025,321.89

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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.