Home / 842,968.40-1,264,015.20-310,215.20

Finding the Fourth Proportional to 842,968.40, 1,264,015.20 and 310,215.20

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Solution

The fourth proportional to 842,968.40, 1,264,015.20 and 310,215.20 is: 465,161.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,968.40 : 1,264,015.20 = 310,215.20 : x
  2. Step 2: Convert to fraction form
    842,968.40/1,264,015.20 = 310,215.20/x
  3. Step 3: Cross multiply
    842,968.40x = 1,264,015.20 × 310,215.20
  4. Step 4: Simplify right side
    842,968.40x = 392,116,728,071.04
  5. Step 5: Solve for x
    x = 392,116,728,071.04/842,968.40
  6. Step 6: Final answer
    x = 465,161.84

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1.5x scale

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.