Home / 858,478.40-1,286,680.80-437,537.60

Finding the Fourth Proportional to 858,478.40, 1,286,680.80 and 437,537.60

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Solution

The fourth proportional to 858,478.40, 1,286,680.80 and 437,537.60 is: 655,777.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,478.40 : 1,286,680.80 = 437,537.60 : x
  2. Step 2: Convert to fraction form
    858,478.40/1,286,680.80 = 437,537.60/x
  3. Step 3: Cross multiply
    858,478.40x = 1,286,680.80 × 437,537.60
  4. Step 4: Simplify right side
    858,478.40x = 562,971,229,198.08
  5. Step 5: Solve for x
    x = 562,971,229,198.08/858,478.40
  6. Step 6: Final answer
    x = 655,777.98

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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.