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Finding the Fourth Proportional to 519,603.49, 716,975.85 and 315,548.02

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Solution

The fourth proportional to 519,603.49, 716,975.85 and 315,548.02 is: 435,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,603.49 : 716,975.85 = 315,548.02 : x
  2. Step 2: Convert to fraction form
    519,603.49/716,975.85 = 315,548.02/x
  3. Step 3: Cross multiply
    519,603.49x = 716,975.85 × 315,548.02
  4. Step 4: Simplify right side
    519,603.49x = 226,240,309,855.32
  5. Step 5: Solve for x
    x = 226,240,309,855.32/519,603.49
  6. Step 6: Final answer
    x = 435,409.53

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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.