Home / 712,102.16-982,711.80-389,842.25

Finding the Fourth Proportional to 712,102.16, 982,711.80 and 389,842.25

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Solution

The fourth proportional to 712,102.16, 982,711.80 and 389,842.25 is: 537,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,102.16 : 982,711.80 = 389,842.25 : x
  2. Step 2: Convert to fraction form
    712,102.16/982,711.80 = 389,842.25/x
  3. Step 3: Cross multiply
    712,102.16x = 982,711.80 × 389,842.25
  4. Step 4: Simplify right side
    712,102.16x = 383,102,574,299.99
  5. Step 5: Solve for x
    x = 383,102,574,299.99/712,102.16
  6. Step 6: Final answer
    x = 537,988.22

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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.