Home / 885,724.40-1,328,716.20-286,583.60

Finding the Fourth Proportional to 885,724.40, 1,328,716.20 and 286,583.60

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Solution

The fourth proportional to 885,724.40, 1,328,716.20 and 286,583.60 is: 429,917.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,724.40 : 1,328,716.20 = 286,583.60 : x
  2. Step 2: Convert to fraction form
    885,724.40/1,328,716.20 = 286,583.60/x
  3. Step 3: Cross multiply
    885,724.40x = 1,328,716.20 × 286,583.60
  4. Step 4: Simplify right side
    885,724.40x = 380,788,271,974.32
  5. Step 5: Solve for x
    x = 380,788,271,974.32/885,724.40
  6. Step 6: Final answer
    x = 429,917.33

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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.