Home / 778,253.49-1,074,039.21-438,743.61

Finding the Fourth Proportional to 778,253.49, 1,074,039.21 and 438,743.61

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Solution

The fourth proportional to 778,253.49, 1,074,039.21 and 438,743.61 is: 605,494.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,253.49 : 1,074,039.21 = 438,743.61 : x
  2. Step 2: Convert to fraction form
    778,253.49/1,074,039.21 = 438,743.61/x
  3. Step 3: Cross multiply
    778,253.49x = 1,074,039.21 × 438,743.61
  4. Step 4: Simplify right side
    778,253.49x = 471,227,840,276.95
  5. Step 5: Solve for x
    x = 471,227,840,276.95/778,253.49
  6. Step 6: Final answer
    x = 605,494.03

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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.