Home / 711,902.40-982,425.72-389,612.34

Finding the Fourth Proportional to 711,902.40, 982,425.72 and 389,612.34

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Solution

The fourth proportional to 711,902.40, 982,425.72 and 389,612.34 is: 537,665.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,902.40 : 982,425.72 = 389,612.34 : x
  2. Step 2: Convert to fraction form
    711,902.40/982,425.72 = 389,612.34/x
  3. Step 3: Cross multiply
    711,902.40x = 982,425.72 × 389,612.34
  4. Step 4: Simplify right side
    711,902.40x = 382,765,183,645.39
  5. Step 5: Solve for x
    x = 382,765,183,645.39/711,902.40
  6. Step 6: Final answer
    x = 537,665.25

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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.