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Finding the Fourth Proportional to 612,005.85, 844,551.23 and 340,066.71

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Solution

The fourth proportional to 612,005.85, 844,551.23 and 340,066.71 is: 469,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,005.85 : 844,551.23 = 340,066.71 : x
  2. Step 2: Convert to fraction form
    612,005.85/844,551.23 = 340,066.71/x
  3. Step 3: Cross multiply
    612,005.85x = 844,551.23 × 340,066.71
  4. Step 4: Simplify right side
    612,005.85x = 287,203,756,512.22
  5. Step 5: Solve for x
    x = 287,203,756,512.22/612,005.85
  6. Step 6: Final answer
    x = 469,282.70

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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.