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Finding the Fourth Proportional to 557,696.02, 769,558.02 and 315,926.82

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Solution

The fourth proportional to 557,696.02, 769,558.02 and 315,926.82 is: 435,943.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,696.02 : 769,558.02 = 315,926.82 : x
  2. Step 2: Convert to fraction form
    557,696.02/769,558.02 = 315,926.82/x
  3. Step 3: Cross multiply
    557,696.02x = 769,558.02 × 315,926.82
  4. Step 4: Simplify right side
    557,696.02x = 243,124,018,064.10
  5. Step 5: Solve for x
    x = 243,124,018,064.10/557,696.02
  6. Step 6: Final answer
    x = 435,943.61

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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.