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Finding the Fourth Proportional to 612,679.75, 845,433.25 and 340,703.65

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Solution

The fourth proportional to 612,679.75, 845,433.25 and 340,703.65 is: 470,135.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,679.75 : 845,433.25 = 340,703.65 : x
  2. Step 2: Convert to fraction form
    612,679.75/845,433.25 = 340,703.65/x
  3. Step 3: Cross multiply
    612,679.75x = 845,433.25 × 340,703.65
  4. Step 4: Simplify right side
    612,679.75x = 288,042,194,311.40
  5. Step 5: Solve for x
    x = 288,042,194,311.40/612,679.75
  6. Step 6: Final answer
    x = 470,135.00

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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.