Home / 646,074.40-969,445.14-309,046.80

Finding the Fourth Proportional to 646,074.40, 969,445.14 and 309,046.80

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Solution

The fourth proportional to 646,074.40, 969,445.14 and 309,046.80 is: 463,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,074.40 : 969,445.14 = 309,046.80 : x
  2. Step 2: Convert to fraction form
    646,074.40/969,445.14 = 309,046.80/x
  3. Step 3: Cross multiply
    646,074.40x = 969,445.14 × 309,046.80
  4. Step 4: Simplify right side
    646,074.40x = 299,603,918,292.55
  5. Step 5: Solve for x
    x = 299,603,918,292.55/646,074.40
  6. Step 6: Final answer
    x = 463,729.75

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1.5x scale

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.