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Finding the Fourth Proportional to 620,851.20, 931,686.40 and 226,867.20

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Solution

The fourth proportional to 620,851.20, 931,686.40 and 226,867.20 is: 340,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,851.20 : 931,686.40 = 226,867.20 : x
  2. Step 2: Convert to fraction form
    620,851.20/931,686.40 = 226,867.20/x
  3. Step 3: Cross multiply
    620,851.20x = 931,686.40 × 226,867.20
  4. Step 4: Simplify right side
    620,851.20x = 211,369,084,846.08
  5. Step 5: Solve for x
    x = 211,369,084,846.08/620,851.20
  6. Step 6: Final answer
    x = 340,450.47

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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.