Home / 405,298.83-607,983.89-105,777.03

Finding the Fourth Proportional to 405,298.83, 607,983.89 and 105,777.03

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Solution

The fourth proportional to 405,298.83, 607,983.89 and 105,777.03 is: 158,674.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,298.83 : 607,983.89 = 105,777.03 : x
  2. Step 2: Convert to fraction form
    405,298.83/607,983.89 = 105,777.03/x
  3. Step 3: Cross multiply
    405,298.83x = 607,983.89 × 105,777.03
  4. Step 4: Simplify right side
    405,298.83x = 64,310,729,643.16
  5. Step 5: Solve for x
    x = 64,310,729,643.16/405,298.83
  6. Step 6: Final answer
    x = 158,674.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.