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Finding the Fourth Proportional to 576,939.40, 796,174.36 and 318,809.16

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Solution

The fourth proportional to 576,939.40, 796,174.36 and 318,809.16 is: 439,955.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,939.40 : 796,174.36 = 318,809.16 : x
  2. Step 2: Convert to fraction form
    576,939.40/796,174.36 = 318,809.16/x
  3. Step 3: Cross multiply
    576,939.40x = 796,174.36 × 318,809.16
  4. Step 4: Simplify right side
    576,939.40x = 253,827,678,925.14
  5. Step 5: Solve for x
    x = 253,827,678,925.14/576,939.40
  6. Step 6: Final answer
    x = 439,955.53

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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.