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Finding the Fourth Proportional to 558,378, 770,562 and 316,583.28

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Solution

The fourth proportional to 558,378, 770,562 and 316,583.28 is: 436,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,378 : 770,562 = 316,583.28 : x
  2. Step 2: Convert to fraction form
    558,378/770,562 = 316,583.28/x
  3. Step 3: Cross multiply
    558,378x = 770,562 × 316,583.28
  4. Step 4: Simplify right side
    558,378x = 243,947,045,403.36
  5. Step 5: Solve for x
    x = 243,947,045,403.36/558,378
  6. Step 6: Final answer
    x = 436,885.13

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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.