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Finding the Fourth Proportional to 691,230.60, 970,522.20 and 691,230.60

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Solution

The fourth proportional to 691,230.60, 970,522.20 and 691,230.60 is: 970,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,230.60 : 970,522.20 = 691,230.60 : x
  2. Step 2: Convert to fraction form
    691,230.60/970,522.20 = 691,230.60/x
  3. Step 3: Cross multiply
    691,230.60x = 970,522.20 × 691,230.60
  4. Step 4: Simplify right side
    691,230.60x = 670,854,642,619.32
  5. Step 5: Solve for x
    x = 670,854,642,619.32/691,230.60
  6. Step 6: Final answer
    x = 970,522.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.