Home / 778,405.34-1,074,197.49-438,871.16

Finding the Fourth Proportional to 778,405.34, 1,074,197.49 and 438,871.16

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Solution

The fourth proportional to 778,405.34, 1,074,197.49 and 438,871.16 is: 605,641.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,405.34 : 1,074,197.49 = 438,871.16 : x
  2. Step 2: Convert to fraction form
    778,405.34/1,074,197.49 = 438,871.16/x
  3. Step 3: Cross multiply
    778,405.34x = 1,074,197.49 × 438,871.16
  4. Step 4: Simplify right side
    778,405.34x = 471,434,298,505.39
  5. Step 5: Solve for x
    x = 471,434,298,505.39/778,405.34
  6. Step 6: Final answer
    x = 605,641.14

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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.