Home / 778,367.51-1,074,105.47-438,813.89

Finding the Fourth Proportional to 778,367.51, 1,074,105.47 and 438,813.89

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Solution

The fourth proportional to 778,367.51, 1,074,105.47 and 438,813.89 is: 605,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,367.51 : 1,074,105.47 = 438,813.89 : x
  2. Step 2: Convert to fraction form
    778,367.51/1,074,105.47 = 438,813.89/x
  3. Step 3: Cross multiply
    778,367.51x = 1,074,105.47 × 438,813.89
  4. Step 4: Simplify right side
    778,367.51x = 471,332,397,366.91
  5. Step 5: Solve for x
    x = 471,332,397,366.91/778,367.51
  6. Step 6: Final answer
    x = 605,539.66

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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.