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Finding the Fourth Proportional to 612,764.83, 845,603.31 and 340,826.87

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Solution

The fourth proportional to 612,764.83, 845,603.31 and 340,826.87 is: 470,334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,764.83 : 845,603.31 = 340,826.87 : x
  2. Step 2: Convert to fraction form
    612,764.83/845,603.31 = 340,826.87/x
  3. Step 3: Cross multiply
    612,764.83x = 845,603.31 × 340,826.87
  4. Step 4: Simplify right side
    612,764.83x = 288,204,332,801.05
  5. Step 5: Solve for x
    x = 288,204,332,801.05/612,764.83
  6. Step 6: Final answer
    x = 470,334.32

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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.