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Finding the Fourth Proportional to 710,852.21, 980,975.98 and 388,563.59

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Solution

The fourth proportional to 710,852.21, 980,975.98 and 388,563.59 is: 536,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,852.21 : 980,975.98 = 388,563.59 : x
  2. Step 2: Convert to fraction form
    710,852.21/980,975.98 = 388,563.59/x
  3. Step 3: Cross multiply
    710,852.21x = 980,975.98 × 388,563.59
  4. Step 4: Simplify right side
    710,852.21x = 381,171,548,492.57
  5. Step 5: Solve for x
    x = 381,171,548,492.57/710,852.21
  6. Step 6: Final answer
    x = 536,217.72

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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.