Home / 549,205.47-822,321.43-388,621.35

Finding the Fourth Proportional to 549,205.47, 822,321.43 and 388,621.35

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Solution

The fourth proportional to 549,205.47, 822,321.43 and 388,621.35 is: 581,879.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,205.47 : 822,321.43 = 388,621.35 : x
  2. Step 2: Convert to fraction form
    549,205.47/822,321.43 = 388,621.35/x
  3. Step 3: Cross multiply
    549,205.47x = 822,321.43 × 388,621.35
  4. Step 4: Simplify right side
    549,205.47x = 319,571,664,260.53
  5. Step 5: Solve for x
    x = 319,571,664,260.53/549,205.47
  6. Step 6: Final answer
    x = 581,879.97

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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.