Home / 711,819.92-982,159.56-421,522.67

Finding the Fourth Proportional to 711,819.92, 982,159.56 and 421,522.67

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Solution

The fourth proportional to 711,819.92, 982,159.56 and 421,522.67 is: 581,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,819.92 : 982,159.56 = 421,522.67 : x
  2. Step 2: Convert to fraction form
    711,819.92/982,159.56 = 421,522.67/x
  3. Step 3: Cross multiply
    711,819.92x = 982,159.56 × 421,522.67
  4. Step 4: Simplify right side
    711,819.92x = 414,002,515,186.43
  5. Step 5: Solve for x
    x = 414,002,515,186.43/711,819.92
  6. Step 6: Final answer
    x = 581,611.31

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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.