Home / 630,171.18-869,388.66-388,033.83

Finding the Fourth Proportional to 630,171.18, 869,388.66 and 388,033.83

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Solution

The fourth proportional to 630,171.18, 869,388.66 and 388,033.83 is: 535,334.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,171.18 : 869,388.66 = 388,033.83 : x
  2. Step 2: Convert to fraction form
    630,171.18/869,388.66 = 388,033.83/x
  3. Step 3: Cross multiply
    630,171.18x = 869,388.66 × 388,033.83
  4. Step 4: Simplify right side
    630,171.18x = 337,352,211,498.37
  5. Step 5: Solve for x
    x = 337,352,211,498.37/630,171.18
  6. Step 6: Final answer
    x = 535,334.24

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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.