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Finding the Fourth Proportional to 612,105.76, 844,707.69 and 340,172.81

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Solution

The fourth proportional to 612,105.76, 844,707.69 and 340,172.81 is: 469,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,105.76 : 844,707.69 = 340,172.81 : x
  2. Step 2: Convert to fraction form
    612,105.76/844,707.69 = 340,172.81/x
  3. Step 3: Cross multiply
    612,105.76x = 844,707.69 × 340,172.81
  4. Step 4: Simplify right side
    612,105.76x = 287,346,592,231.51
  5. Step 5: Solve for x
    x = 287,346,592,231.51/612,105.76
  6. Step 6: Final answer
    x = 469,439.45

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1.5x scale

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.