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Finding the Fourth Proportional to 620,894.22, 931,347.09 and 247,012.62

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Solution

The fourth proportional to 620,894.22, 931,347.09 and 247,012.62 is: 370,521.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,894.22 : 931,347.09 = 247,012.62 : x
  2. Step 2: Convert to fraction form
    620,894.22/931,347.09 = 247,012.62/x
  3. Step 3: Cross multiply
    620,894.22x = 931,347.09 × 247,012.62
  4. Step 4: Simplify right side
    620,894.22x = 230,054,484,830.28
  5. Step 5: Solve for x
    x = 230,054,484,830.28/620,894.22
  6. Step 6: Final answer
    x = 370,521.22

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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.