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Finding the Fourth Proportional to 579,446.40, 799,595.80 and 321,336.68

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Solution

The fourth proportional to 579,446.40, 799,595.80 and 321,336.68 is: 443,422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,446.40 : 799,595.80 = 321,336.68 : x
  2. Step 2: Convert to fraction form
    579,446.40/799,595.80 = 321,336.68/x
  3. Step 3: Cross multiply
    579,446.40x = 799,595.80 × 321,336.68
  4. Step 4: Simplify right side
    579,446.40x = 256,939,459,713.94
  5. Step 5: Solve for x
    x = 256,939,459,713.94/579,446.40
  6. Step 6: Final answer
    x = 443,422.31

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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.