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Finding the Fourth Proportional to 710,558.28, 980,558.76 and 388,261.44

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Solution

The fourth proportional to 710,558.28, 980,558.76 and 388,261.44 is: 535,794.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,558.28 : 980,558.76 = 388,261.44 : x
  2. Step 2: Convert to fraction form
    710,558.28/980,558.76 = 388,261.44/x
  3. Step 3: Cross multiply
    710,558.28x = 980,558.76 × 388,261.44
  4. Step 4: Simplify right side
    710,558.28x = 380,713,156,162.21
  5. Step 5: Solve for x
    x = 380,713,156,162.21/710,558.28
  6. Step 6: Final answer
    x = 535,794.41

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1.5x scale

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.