Home / 500,060.22-690,181.47-378,990.33

Finding the Fourth Proportional to 500,060.22, 690,181.47 and 378,990.33

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Solution

The fourth proportional to 500,060.22, 690,181.47 and 378,990.33 is: 523,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,060.22 : 690,181.47 = 378,990.33 : x
  2. Step 2: Convert to fraction form
    500,060.22/690,181.47 = 378,990.33/x
  3. Step 3: Cross multiply
    500,060.22x = 690,181.47 × 378,990.33
  4. Step 4: Simplify right side
    500,060.22x = 261,572,103,075.19
  5. Step 5: Solve for x
    x = 261,572,103,075.19/500,060.22
  6. Step 6: Final answer
    x = 523,081.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.