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Finding the Fourth Proportional to 712,096.55, 982,695.88 and 389,836.63

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Solution

The fourth proportional to 712,096.55, 982,695.88 and 389,836.63 is: 537,975.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,096.55 : 982,695.88 = 389,836.63 : x
  2. Step 2: Convert to fraction form
    712,096.55/982,695.88 = 389,836.63/x
  3. Step 3: Cross multiply
    712,096.55x = 982,695.88 × 389,836.63
  4. Step 4: Simplify right side
    712,096.55x = 383,090,845,260.61
  5. Step 5: Solve for x
    x = 383,090,845,260.61/712,096.55
  6. Step 6: Final answer
    x = 537,975.99

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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.