Home / 856,543.80-1,284,815.70-768,070.20

Finding the Fourth Proportional to 856,543.80, 1,284,815.70 and 768,070.20

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Solution

The fourth proportional to 856,543.80, 1,284,815.70 and 768,070.20 is: 1,152,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,543.80 : 1,284,815.70 = 768,070.20 : x
  2. Step 2: Convert to fraction form
    856,543.80/1,284,815.70 = 768,070.20/x
  3. Step 3: Cross multiply
    856,543.80x = 1,284,815.70 × 768,070.20
  4. Step 4: Simplify right side
    856,543.80x = 986,828,651,662.14
  5. Step 5: Solve for x
    x = 986,828,651,662.14/856,543.80
  6. Step 6: Final answer
    x = 1,152,105.30

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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.