Home / 549,826.72-758,729.59-320,421.36

Finding the Fourth Proportional to 549,826.72, 758,729.59 and 320,421.36

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Solution

The fourth proportional to 549,826.72, 758,729.59 and 320,421.36 is: 442,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,826.72 : 758,729.59 = 320,421.36 : x
  2. Step 2: Convert to fraction form
    549,826.72/758,729.59 = 320,421.36/x
  3. Step 3: Cross multiply
    549,826.72x = 758,729.59 × 320,421.36
  4. Step 4: Simplify right side
    549,826.72x = 243,113,164,034.70
  5. Step 5: Solve for x
    x = 243,113,164,034.70/549,826.72
  6. Step 6: Final answer
    x = 442,163.24

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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.