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Finding the Fourth Proportional to 702,936.78, 970,051 and 380,646.86

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Solution

The fourth proportional to 702,936.78, 970,051 and 380,646.86 is: 525,291.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,936.78 : 970,051 = 380,646.86 : x
  2. Step 2: Convert to fraction form
    702,936.78/970,051 = 380,646.86/x
  3. Step 3: Cross multiply
    702,936.78x = 970,051 × 380,646.86
  4. Step 4: Simplify right side
    702,936.78x = 369,246,867,189.86
  5. Step 5: Solve for x
    x = 369,246,867,189.86/702,936.78
  6. Step 6: Final answer
    x = 525,291.72

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1.5x scale

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.