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Finding the Fourth Proportional to 702,915.55, 970,022.10 and 380,626.60

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Solution

The fourth proportional to 702,915.55, 970,022.10 and 380,626.60 is: 525,263.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,915.55 : 970,022.10 = 380,626.60 : x
  2. Step 2: Convert to fraction form
    702,915.55/970,022.10 = 380,626.60/x
  3. Step 3: Cross multiply
    702,915.55x = 970,022.10 × 380,626.60
  4. Step 4: Simplify right side
    702,915.55x = 369,216,213,847.86
  5. Step 5: Solve for x
    x = 369,216,213,847.86/702,915.55
  6. Step 6: Final answer
    x = 525,263.97

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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.