Home / 712,045.70-982,624.54-389,776.38

Finding the Fourth Proportional to 712,045.70, 982,624.54 and 389,776.38

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Solution

The fourth proportional to 712,045.70, 982,624.54 and 389,776.38 is: 537,892.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,045.70 : 982,624.54 = 389,776.38 : x
  2. Step 2: Convert to fraction form
    712,045.70/982,624.54 = 389,776.38/x
  3. Step 3: Cross multiply
    712,045.70x = 982,624.54 × 389,776.38
  4. Step 4: Simplify right side
    712,045.70x = 383,003,836,100.37
  5. Step 5: Solve for x
    x = 383,003,836,100.37/712,045.70
  6. Step 6: Final answer
    x = 537,892.21

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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.