Home / 859,307.40-1,286,336.70-670,350.60

Finding the Fourth Proportional to 859,307.40, 1,286,336.70 and 670,350.60

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Solution

The fourth proportional to 859,307.40, 1,286,336.70 and 670,350.60 is: 1,003,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,307.40 : 1,286,336.70 = 670,350.60 : x
  2. Step 2: Convert to fraction form
    859,307.40/1,286,336.70 = 670,350.60/x
  3. Step 3: Cross multiply
    859,307.40x = 1,286,336.70 × 670,350.60
  4. Step 4: Simplify right side
    859,307.40x = 862,296,578,647.02
  5. Step 5: Solve for x
    x = 862,296,578,647.02/859,307.40
  6. Step 6: Final answer
    x = 1,003,478.59

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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.