Home / 747,323.40-1,121,130.90-320,858.40

Finding the Fourth Proportional to 747,323.40, 1,121,130.90 and 320,858.40

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Solution

The fourth proportional to 747,323.40, 1,121,130.90 and 320,858.40 is: 481,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,323.40 : 1,121,130.90 = 320,858.40 : x
  2. Step 2: Convert to fraction form
    747,323.40/1,121,130.90 = 320,858.40/x
  3. Step 3: Cross multiply
    747,323.40x = 1,121,130.90 × 320,858.40
  4. Step 4: Simplify right side
    747,323.40x = 359,724,266,764.56
  5. Step 5: Solve for x
    x = 359,724,266,764.56/747,323.40
  6. Step 6: Final answer
    x = 481,350.20

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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.