Home / 605,314.41-835,133.94-390,597.18

Finding the Fourth Proportional to 605,314.41, 835,133.94 and 390,597.18

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Solution

The fourth proportional to 605,314.41, 835,133.94 and 390,597.18 is: 538,895.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,314.41 : 835,133.94 = 390,597.18 : x
  2. Step 2: Convert to fraction form
    605,314.41/835,133.94 = 390,597.18/x
  3. Step 3: Cross multiply
    605,314.41x = 835,133.94 × 390,597.18
  4. Step 4: Simplify right side
    605,314.41x = 326,200,961,886.29
  5. Step 5: Solve for x
    x = 326,200,961,886.29/605,314.41
  6. Step 6: Final answer
    x = 538,895.09

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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.