Home / 711,647.07-982,072.35-389,358.44

Finding the Fourth Proportional to 711,647.07, 982,072.35 and 389,358.44

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Solution

The fourth proportional to 711,647.07, 982,072.35 and 389,358.44 is: 537,314.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,647.07 : 982,072.35 = 389,358.44 : x
  2. Step 2: Convert to fraction form
    711,647.07/982,072.35 = 389,358.44/x
  3. Step 3: Cross multiply
    711,647.07x = 982,072.35 × 389,358.44
  4. Step 4: Simplify right side
    711,647.07x = 382,378,162,459.70
  5. Step 5: Solve for x
    x = 382,378,162,459.70/711,647.07
  6. Step 6: Final answer
    x = 537,314.32

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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.