Home / 905,439.90-1,248,258.50-722,300.05

Finding the Fourth Proportional to 905,439.90, 1,248,258.50 and 722,300.05

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Solution

The fourth proportional to 905,439.90, 1,248,258.50 and 722,300.05 is: 995,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,439.90 : 1,248,258.50 = 722,300.05 : x
  2. Step 2: Convert to fraction form
    905,439.90/1,248,258.50 = 722,300.05/x
  3. Step 3: Cross multiply
    905,439.90x = 1,248,258.50 × 722,300.05
  4. Step 4: Simplify right side
    905,439.90x = 901,617,167,110.13
  5. Step 5: Solve for x
    x = 901,617,167,110.13/905,439.90
  6. Step 6: Final answer
    x = 995,778.04

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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.