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Finding the Fourth Proportional to 631,715.86, 948,016.66 and 365,109.63

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Solution

The fourth proportional to 631,715.86, 948,016.66 and 365,109.63 is: 547,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,715.86 : 948,016.66 = 365,109.63 : x
  2. Step 2: Convert to fraction form
    631,715.86/948,016.66 = 365,109.63/x
  3. Step 3: Cross multiply
    631,715.86x = 948,016.66 × 365,109.63
  4. Step 4: Simplify right side
    631,715.86x = 346,130,008,183.18
  5. Step 5: Solve for x
    x = 346,130,008,183.18/631,715.86
  6. Step 6: Final answer
    x = 547,920.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.