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Finding the Fourth Proportional to 553,636.36, 764,018.15 and 298,987.53

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Solution

The fourth proportional to 553,636.36, 764,018.15 and 298,987.53 is: 412,602.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,636.36 : 764,018.15 = 298,987.53 : x
  2. Step 2: Convert to fraction form
    553,636.36/764,018.15 = 298,987.53/x
  3. Step 3: Cross multiply
    553,636.36x = 764,018.15 × 298,987.53
  4. Step 4: Simplify right side
    553,636.36x = 228,431,896,471.05
  5. Step 5: Solve for x
    x = 228,431,896,471.05/553,636.36
  6. Step 6: Final answer
    x = 412,602.77

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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.