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Finding the Fourth Proportional to 710,846.99, 980,968.78 and 388,558.37

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Solution

The fourth proportional to 710,846.99, 980,968.78 and 388,558.37 is: 536,210.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,846.99 : 980,968.78 = 388,558.37 : x
  2. Step 2: Convert to fraction form
    710,846.99/980,968.78 = 388,558.37/x
  3. Step 3: Cross multiply
    710,846.99x = 980,968.78 × 388,558.37
  4. Step 4: Simplify right side
    710,846.99x = 381,163,630,177.69
  5. Step 5: Solve for x
    x = 381,163,630,177.69/710,846.99
  6. Step 6: Final answer
    x = 536,210.51

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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.