Home / 813,435.72-1,122,284.61-469,225.32

Finding the Fourth Proportional to 813,435.72, 1,122,284.61 and 469,225.32

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Solution

The fourth proportional to 813,435.72, 1,122,284.61 and 469,225.32 is: 647,382.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,435.72 : 1,122,284.61 = 469,225.32 : x
  2. Step 2: Convert to fraction form
    813,435.72/1,122,284.61 = 469,225.32/x
  3. Step 3: Cross multiply
    813,435.72x = 1,122,284.61 × 469,225.32
  4. Step 4: Simplify right side
    813,435.72x = 526,604,355,258.33
  5. Step 5: Solve for x
    x = 526,604,355,258.33/813,435.72
  6. Step 6: Final answer
    x = 647,382.88

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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.