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Finding the Fourth Proportional to 549,686.16, 758,716.20 and 323,404.56

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Solution

The fourth proportional to 549,686.16, 758,716.20 and 323,404.56 is: 446,386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,686.16 : 758,716.20 = 323,404.56 : x
  2. Step 2: Convert to fraction form
    549,686.16/758,716.20 = 323,404.56/x
  3. Step 3: Cross multiply
    549,686.16x = 758,716.20 × 323,404.56
  4. Step 4: Simplify right side
    549,686.16x = 245,372,278,825.87
  5. Step 5: Solve for x
    x = 245,372,278,825.87/549,686.16
  6. Step 6: Final answer
    x = 446,386.13

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1.5x scale

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.