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Finding the Fourth Proportional to 970,640.40, 1,455,960.60 and 886,659.60

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Solution

The fourth proportional to 970,640.40, 1,455,960.60 and 886,659.60 is: 1,329,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,640.40 : 1,455,960.60 = 886,659.60 : x
  2. Step 2: Convert to fraction form
    970,640.40/1,455,960.60 = 886,659.60/x
  3. Step 3: Cross multiply
    970,640.40x = 1,455,960.60 × 886,659.60
  4. Step 4: Simplify right side
    970,640.40x = 1,290,941,443,211.76
  5. Step 5: Solve for x
    x = 1,290,941,443,211.76/970,640.40
  6. Step 6: Final answer
    x = 1,329,989.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.