Home / 579,653.12-799,902.40-321,528.96

Finding the Fourth Proportional to 579,653.12, 799,902.40 and 321,528.96

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Solution

The fourth proportional to 579,653.12, 799,902.40 and 321,528.96 is: 443,699.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,653.12 : 799,902.40 = 321,528.96 : x
  2. Step 2: Convert to fraction form
    579,653.12/799,902.40 = 321,528.96/x
  3. Step 3: Cross multiply
    579,653.12x = 799,902.40 × 321,528.96
  4. Step 4: Simplify right side
    579,653.12x = 257,191,786,773.50
  5. Step 5: Solve for x
    x = 257,191,786,773.50/579,653.12
  6. Step 6: Final answer
    x = 443,699.48

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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.