Home / 415,849.20-623,773.80-257,564.40

Finding the Fourth Proportional to 415,849.20, 623,773.80 and 257,564.40

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Solution

The fourth proportional to 415,849.20, 623,773.80 and 257,564.40 is: 386,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,849.20 : 623,773.80 = 257,564.40 : x
  2. Step 2: Convert to fraction form
    415,849.20/623,773.80 = 257,564.40/x
  3. Step 3: Cross multiply
    415,849.20x = 623,773.80 × 257,564.40
  4. Step 4: Simplify right side
    415,849.20x = 160,661,924,532.72
  5. Step 5: Solve for x
    x = 160,661,924,532.72/415,849.20
  6. Step 6: Final answer
    x = 386,346.60

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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.