Home / 711,808.18-982,295.37-389,518.35

Finding the Fourth Proportional to 711,808.18, 982,295.37 and 389,518.35

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Solution

The fourth proportional to 711,808.18, 982,295.37 and 389,518.35 is: 537,535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,808.18 : 982,295.37 = 389,518.35 : x
  2. Step 2: Convert to fraction form
    711,808.18/982,295.37 = 389,518.35/x
  3. Step 3: Cross multiply
    711,808.18x = 982,295.37 × 389,518.35
  4. Step 4: Simplify right side
    711,808.18x = 382,622,071,735.04
  5. Step 5: Solve for x
    x = 382,622,071,735.04/711,808.18
  6. Step 6: Final answer
    x = 537,535.37

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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.