Home / 712,103.96-982,703.38-389,814.27

Finding the Fourth Proportional to 712,103.96, 982,703.38 and 389,814.27

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Solution

The fourth proportional to 712,103.96, 982,703.38 and 389,814.27 is: 537,943.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,103.96 : 982,703.38 = 389,814.27 : x
  2. Step 2: Convert to fraction form
    712,103.96/982,703.38 = 389,814.27/x
  3. Step 3: Cross multiply
    712,103.96x = 982,703.38 × 389,814.27
  4. Step 4: Simplify right side
    712,103.96x = 383,071,800,701.23
  5. Step 5: Solve for x
    x = 383,071,800,701.23/712,103.96
  6. Step 6: Final answer
    x = 537,943.65

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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.