Home / 1,231,504.80-1,847,314.80-390,122.40

Finding the Fourth Proportional to 1,231,504.80, 1,847,314.80 and 390,122.40

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Solution

The fourth proportional to 1,231,504.80, 1,847,314.80 and 390,122.40 is: 585,201.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,504.80 : 1,847,314.80 = 390,122.40 : x
  2. Step 2: Convert to fraction form
    1,231,504.80/1,847,314.80 = 390,122.40/x
  3. Step 3: Cross multiply
    1,231,504.80x = 1,847,314.80 × 390,122.40
  4. Step 4: Simplify right side
    1,231,504.80x = 720,678,883,331.52
  5. Step 5: Solve for x
    x = 720,678,883,331.52/1,231,504.80
  6. Step 6: Final answer
    x = 585,201.85

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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.