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Finding the Fourth Proportional to 558,710.55, 770,967 and 313,639.11

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Solution

The fourth proportional to 558,710.55, 770,967 and 313,639.11 is: 432,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,710.55 : 770,967 = 313,639.11 : x
  2. Step 2: Convert to fraction form
    558,710.55/770,967 = 313,639.11/x
  3. Step 3: Cross multiply
    558,710.55x = 770,967 × 313,639.11
  4. Step 4: Simplify right side
    558,710.55x = 241,805,403,719.37
  5. Step 5: Solve for x
    x = 241,805,403,719.37/558,710.55
  6. Step 6: Final answer
    x = 432,791.91

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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.