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Finding the Fourth Proportional to 612,759.27, 845,595.63 and 340,821.31

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Solution

The fourth proportional to 612,759.27, 845,595.63 and 340,821.31 is: 470,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,759.27 : 845,595.63 = 340,821.31 : x
  2. Step 2: Convert to fraction form
    612,759.27/845,595.63 = 340,821.31/x
  3. Step 3: Cross multiply
    612,759.27x = 845,595.63 × 340,821.31
  4. Step 4: Simplify right side
    612,759.27x = 288,197,010,346.88
  5. Step 5: Solve for x
    x = 288,197,010,346.88/612,759.27
  6. Step 6: Final answer
    x = 470,326.64

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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.