Home / 764,687.80-1,147,031.70-640,271.80

Finding the Fourth Proportional to 764,687.80, 1,147,031.70 and 640,271.80

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Solution

The fourth proportional to 764,687.80, 1,147,031.70 and 640,271.80 is: 960,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,687.80 : 1,147,031.70 = 640,271.80 : x
  2. Step 2: Convert to fraction form
    764,687.80/1,147,031.70 = 640,271.80/x
  3. Step 3: Cross multiply
    764,687.80x = 1,147,031.70 × 640,271.80
  4. Step 4: Simplify right side
    764,687.80x = 734,412,051,216.06
  5. Step 5: Solve for x
    x = 734,412,051,216.06/764,687.80
  6. Step 6: Final answer
    x = 960,407.70

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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.