Home / 769,657.40-1,154,814.15-485,566.10

Finding the Fourth Proportional to 769,657.40, 1,154,814.15 and 485,566.10

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Solution

The fourth proportional to 769,657.40, 1,154,814.15 and 485,566.10 is: 728,556.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,657.40 : 1,154,814.15 = 485,566.10 : x
  2. Step 2: Convert to fraction form
    769,657.40/1,154,814.15 = 485,566.10/x
  3. Step 3: Cross multiply
    769,657.40x = 1,154,814.15 × 485,566.10
  4. Step 4: Simplify right side
    769,657.40x = 560,738,603,040.32
  5. Step 5: Solve for x
    x = 560,738,603,040.32/769,657.40
  6. Step 6: Final answer
    x = 728,556.11

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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.