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Finding the Fourth Proportional to 553,622.90, 763,999.60 and 298,974.07

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Solution

The fourth proportional to 553,622.90, 763,999.60 and 298,974.07 is: 412,584.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,622.90 : 763,999.60 = 298,974.07 : x
  2. Step 2: Convert to fraction form
    553,622.90/763,999.60 = 298,974.07/x
  3. Step 3: Cross multiply
    553,622.90x = 763,999.60 × 298,974.07
  4. Step 4: Simplify right side
    553,622.90x = 228,416,069,890.37
  5. Step 5: Solve for x
    x = 228,416,069,890.37/553,622.90
  6. Step 6: Final answer
    x = 412,584.22

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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.