Home / 689,631.83-1,033,102.73-389,203.64

Finding the Fourth Proportional to 689,631.83, 1,033,102.73 and 389,203.64

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Solution

The fourth proportional to 689,631.83, 1,033,102.73 and 389,203.64 is: 583,046.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,631.83 : 1,033,102.73 = 389,203.64 : x
  2. Step 2: Convert to fraction form
    689,631.83/1,033,102.73 = 389,203.64/x
  3. Step 3: Cross multiply
    689,631.83x = 1,033,102.73 × 389,203.64
  4. Step 4: Simplify right side
    689,631.83x = 402,087,343,009.94
  5. Step 5: Solve for x
    x = 402,087,343,009.94/689,631.83
  6. Step 6: Final answer
    x = 583,046.38

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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.