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Finding the Fourth Proportional to 579,829.80, 869,744.70 and 343,050.60

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Solution

The fourth proportional to 579,829.80, 869,744.70 and 343,050.60 is: 514,575.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,829.80 : 869,744.70 = 343,050.60 : x
  2. Step 2: Convert to fraction form
    579,829.80/869,744.70 = 343,050.60/x
  3. Step 3: Cross multiply
    579,829.80x = 869,744.70 × 343,050.60
  4. Step 4: Simplify right side
    579,829.80x = 298,366,441,181.82
  5. Step 5: Solve for x
    x = 298,366,441,181.82/579,829.80
  6. Step 6: Final answer
    x = 514,575.90

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Double scale
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Similar ratio
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1.5x scale

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.