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Finding the Fourth Proportional to 554,011.34, 764,596.40 and 321,489.50

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Solution

The fourth proportional to 554,011.34, 764,596.40 and 321,489.50 is: 443,690.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,011.34 : 764,596.40 = 321,489.50 : x
  2. Step 2: Convert to fraction form
    554,011.34/764,596.40 = 321,489.50/x
  3. Step 3: Cross multiply
    554,011.34x = 764,596.40 × 321,489.50
  4. Step 4: Simplify right side
    554,011.34x = 245,809,714,337.80
  5. Step 5: Solve for x
    x = 245,809,714,337.80/554,011.34
  6. Step 6: Final answer
    x = 443,690.76

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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.