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Finding the Fourth Proportional to 938,447.60, 1,407,658.20 and 228,477.20

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Solution

The fourth proportional to 938,447.60, 1,407,658.20 and 228,477.20 is: 342,712.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,447.60 : 1,407,658.20 = 228,477.20 : x
  2. Step 2: Convert to fraction form
    938,447.60/1,407,658.20 = 228,477.20/x
  3. Step 3: Cross multiply
    938,447.60x = 1,407,658.20 × 228,477.20
  4. Step 4: Simplify right side
    938,447.60x = 321,617,804,093.04
  5. Step 5: Solve for x
    x = 321,617,804,093.04/938,447.60
  6. Step 6: Final answer
    x = 342,712.59

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Double scale
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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.