Home / 858,867.55-1,288,793.40-326,770.45

Finding the Fourth Proportional to 858,867.55, 1,288,793.40 and 326,770.45

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Solution

The fourth proportional to 858,867.55, 1,288,793.40 and 326,770.45 is: 490,342.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,867.55 : 1,288,793.40 = 326,770.45 : x
  2. Step 2: Convert to fraction form
    858,867.55/1,288,793.40 = 326,770.45/x
  3. Step 3: Cross multiply
    858,867.55x = 1,288,793.40 × 326,770.45
  4. Step 4: Simplify right side
    858,867.55x = 421,139,599,275.03
  5. Step 5: Solve for x
    x = 421,139,599,275.03/858,867.55
  6. Step 6: Final answer
    x = 490,342.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.