Home / 678,013.21-935,596.37-402,323.55

Finding the Fourth Proportional to 678,013.21, 935,596.37 and 402,323.55

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Solution

The fourth proportional to 678,013.21, 935,596.37 and 402,323.55 is: 555,169.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,013.21 : 935,596.37 = 402,323.55 : x
  2. Step 2: Convert to fraction form
    678,013.21/935,596.37 = 402,323.55/x
  3. Step 3: Cross multiply
    678,013.21x = 935,596.37 × 402,323.55
  4. Step 4: Simplify right side
    678,013.21x = 376,412,450,933.90
  5. Step 5: Solve for x
    x = 376,412,450,933.90/678,013.21
  6. Step 6: Final answer
    x = 555,169.79

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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.