Home / 618,883.12-926,749.20-407,881.36

Finding the Fourth Proportional to 618,883.12, 926,749.20 and 407,881.36

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Solution

The fourth proportional to 618,883.12, 926,749.20 and 407,881.36 is: 610,783.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,883.12 : 926,749.20 = 407,881.36 : x
  2. Step 2: Convert to fraction form
    618,883.12/926,749.20 = 407,881.36/x
  3. Step 3: Cross multiply
    618,883.12x = 926,749.20 × 407,881.36
  4. Step 4: Simplify right side
    618,883.12x = 378,003,724,074.91
  5. Step 5: Solve for x
    x = 378,003,724,074.91/618,883.12
  6. Step 6: Final answer
    x = 610,783.70

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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.