Home / 977,704.80-1,465,682.40-640,906.80

Finding the Fourth Proportional to 977,704.80, 1,465,682.40 and 640,906.80

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Solution

The fourth proportional to 977,704.80, 1,465,682.40 and 640,906.80 is: 960,786.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,704.80 : 1,465,682.40 = 640,906.80 : x
  2. Step 2: Convert to fraction form
    977,704.80/1,465,682.40 = 640,906.80/x
  3. Step 3: Cross multiply
    977,704.80x = 1,465,682.40 × 640,906.80
  4. Step 4: Simplify right side
    977,704.80x = 939,365,816,800.32
  5. Step 5: Solve for x
    x = 939,365,816,800.32/977,704.80
  6. Step 6: Final answer
    x = 960,786.75

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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.