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Finding the Fourth Proportional to 702,928.03, 970,038.92 and 380,638.11

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Solution

The fourth proportional to 702,928.03, 970,038.92 and 380,638.11 is: 525,279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,928.03 : 970,038.92 = 380,638.11 : x
  2. Step 2: Convert to fraction form
    702,928.03/970,038.92 = 380,638.11/x
  3. Step 3: Cross multiply
    702,928.03x = 970,038.92 × 380,638.11
  4. Step 4: Simplify right side
    702,928.03x = 369,233,781,135.24
  5. Step 5: Solve for x
    x = 369,233,781,135.24/702,928.03
  6. Step 6: Final answer
    x = 525,279.64

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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.