Home / 911,900.26-1,258,431.69-498,448.86

Finding the Fourth Proportional to 911,900.26, 1,258,431.69 and 498,448.86

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Solution

The fourth proportional to 911,900.26, 1,258,431.69 and 498,448.86 is: 687,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,900.26 : 1,258,431.69 = 498,448.86 : x
  2. Step 2: Convert to fraction form
    911,900.26/1,258,431.69 = 498,448.86/x
  3. Step 3: Cross multiply
    911,900.26x = 1,258,431.69 × 498,448.86
  4. Step 4: Simplify right side
    911,900.26x = 627,263,838,418.44
  5. Step 5: Solve for x
    x = 627,263,838,418.44/911,900.26
  6. Step 6: Final answer
    x = 687,864.52

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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.