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Finding the Fourth Proportional to 553,615.44, 763,989.32 and 298,966.64

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Solution

The fourth proportional to 553,615.44, 763,989.32 and 298,966.64 is: 412,573.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,615.44 : 763,989.32 = 298,966.64 : x
  2. Step 2: Convert to fraction form
    553,615.44/763,989.32 = 298,966.64/x
  3. Step 3: Cross multiply
    553,615.44x = 763,989.32 × 298,966.64
  4. Step 4: Simplify right side
    553,615.44x = 228,407,314,681.51
  5. Step 5: Solve for x
    x = 228,407,314,681.51/553,615.44
  6. Step 6: Final answer
    x = 412,573.96

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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.