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Finding the Fourth Proportional to 702,930.03, 970,041.68 and 380,640.11

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Solution

The fourth proportional to 702,930.03, 970,041.68 and 380,640.11 is: 525,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,930.03 : 970,041.68 = 380,640.11 : x
  2. Step 2: Convert to fraction form
    702,930.03/970,041.68 = 380,640.11/x
  3. Step 3: Cross multiply
    702,930.03x = 970,041.68 × 380,640.11
  4. Step 4: Simplify right side
    702,930.03x = 369,236,771,779.79
  5. Step 5: Solve for x
    x = 369,236,771,779.79/702,930.03
  6. Step 6: Final answer
    x = 525,282.40

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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.