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Finding the Fourth Proportional to 553,622.71, 763,999.34 and 298,973.88

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Solution

The fourth proportional to 553,622.71, 763,999.34 and 298,973.88 is: 412,583.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,622.71 : 763,999.34 = 298,973.88 : x
  2. Step 2: Convert to fraction form
    553,622.71/763,999.34 = 298,973.88/x
  3. Step 3: Cross multiply
    553,622.71x = 763,999.34 × 298,973.88
  4. Step 4: Simplify right side
    553,622.71x = 228,415,846,997.24
  5. Step 5: Solve for x
    x = 228,415,846,997.24/553,622.71
  6. Step 6: Final answer
    x = 412,583.95

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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.