Home / 778,450.23-1,074,236.85-456,374.79

Finding the Fourth Proportional to 778,450.23, 1,074,236.85 and 456,374.79

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Solution

The fourth proportional to 778,450.23, 1,074,236.85 and 456,374.79 is: 629,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,450.23 : 1,074,236.85 = 456,374.79 : x
  2. Step 2: Convert to fraction form
    778,450.23/1,074,236.85 = 456,374.79/x
  3. Step 3: Cross multiply
    778,450.23x = 1,074,236.85 × 456,374.79
  4. Step 4: Simplify right side
    778,450.23x = 490,254,616,829.01
  5. Step 5: Solve for x
    x = 490,254,616,829.01/778,450.23
  6. Step 6: Final answer
    x = 629,782.87

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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.