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Finding the Fourth Proportional to 549,639.28, 824,452.28 and 309,771.28

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Solution

The fourth proportional to 549,639.28, 824,452.28 and 309,771.28 is: 464,653.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,639.28 : 824,452.28 = 309,771.28 : x
  2. Step 2: Convert to fraction form
    549,639.28/824,452.28 = 309,771.28/x
  3. Step 3: Cross multiply
    549,639.28x = 824,452.28 × 309,771.28
  4. Step 4: Simplify right side
    549,639.28x = 255,391,638,074.52
  5. Step 5: Solve for x
    x = 255,391,638,074.52/549,639.28
  6. Step 6: Final answer
    x = 464,653.18

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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.