Home / 885,716.40-1,328,747.40-380,276.40

Finding the Fourth Proportional to 885,716.40, 1,328,747.40 and 380,276.40

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Solution

The fourth proportional to 885,716.40, 1,328,747.40 and 380,276.40 is: 570,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,716.40 : 1,328,747.40 = 380,276.40 : x
  2. Step 2: Convert to fraction form
    885,716.40/1,328,747.40 = 380,276.40/x
  3. Step 3: Cross multiply
    885,716.40x = 1,328,747.40 × 380,276.40
  4. Step 4: Simplify right side
    885,716.40x = 505,291,277,781.36
  5. Step 5: Solve for x
    x = 505,291,277,781.36/885,716.40
  6. Step 6: Final answer
    x = 570,488.79

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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.