Home / 810,730.40-1,215,328.79-361,203.48

Finding the Fourth Proportional to 810,730.40, 1,215,328.79 and 361,203.48

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Solution

The fourth proportional to 810,730.40, 1,215,328.79 and 361,203.48 is: 541,463.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,730.40 : 1,215,328.79 = 361,203.48 : x
  2. Step 2: Convert to fraction form
    810,730.40/1,215,328.79 = 361,203.48/x
  3. Step 3: Cross multiply
    810,730.40x = 1,215,328.79 × 361,203.48
  4. Step 4: Simplify right side
    810,730.40x = 438,980,986,486.17
  5. Step 5: Solve for x
    x = 438,980,986,486.17/810,730.40
  6. Step 6: Final answer
    x = 541,463.59

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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.