Home / 778,540.56-1,074,386.80-456,186.48

Finding the Fourth Proportional to 778,540.56, 1,074,386.80 and 456,186.48

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Solution

The fourth proportional to 778,540.56, 1,074,386.80 and 456,186.48 is: 629,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,540.56 : 1,074,386.80 = 456,186.48 : x
  2. Step 2: Convert to fraction form
    778,540.56/1,074,386.80 = 456,186.48/x
  3. Step 3: Cross multiply
    778,540.56x = 1,074,386.80 × 456,186.48
  4. Step 4: Simplify right side
    778,540.56x = 490,120,732,450.46
  5. Step 5: Solve for x
    x = 490,120,732,450.46/778,540.56
  6. Step 6: Final answer
    x = 629,537.83

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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.