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Finding the Fourth Proportional to 553,637.36, 764,019.53 and 298,988.53

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Solution

The fourth proportional to 553,637.36, 764,019.53 and 298,988.53 is: 412,604.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,637.36 : 764,019.53 = 298,988.53 : x
  2. Step 2: Convert to fraction form
    553,637.36/764,019.53 = 298,988.53/x
  3. Step 3: Cross multiply
    553,637.36x = 764,019.53 × 298,988.53
  4. Step 4: Simplify right side
    553,637.36x = 228,433,076,165.99
  5. Step 5: Solve for x
    x = 228,433,076,165.99/553,637.36
  6. Step 6: Final answer
    x = 412,604.16

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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.