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Finding the Fourth Proportional to 536,431.60, 803,725.80 and 349,346.80

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Solution

The fourth proportional to 536,431.60, 803,725.80 and 349,346.80 is: 523,420.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,431.60 : 803,725.80 = 349,346.80 : x
  2. Step 2: Convert to fraction form
    536,431.60/803,725.80 = 349,346.80/x
  3. Step 3: Cross multiply
    536,431.60x = 803,725.80 × 349,346.80
  4. Step 4: Simplify right side
    536,431.60x = 280,779,036,307.44
  5. Step 5: Solve for x
    x = 280,779,036,307.44/536,431.60
  6. Step 6: Final answer
    x = 523,420.02

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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.