Home / 805,918.20-1,208,531.70-406,404.60

Finding the Fourth Proportional to 805,918.20, 1,208,531.70 and 406,404.60

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Solution

The fourth proportional to 805,918.20, 1,208,531.70 and 406,404.60 is: 609,432.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,918.20 : 1,208,531.70 = 406,404.60 : x
  2. Step 2: Convert to fraction form
    805,918.20/1,208,531.70 = 406,404.60/x
  3. Step 3: Cross multiply
    805,918.20x = 1,208,531.70 × 406,404.60
  4. Step 4: Simplify right side
    805,918.20x = 491,152,842,125.82
  5. Step 5: Solve for x
    x = 491,152,842,125.82/805,918.20
  6. Step 6: Final answer
    x = 609,432.62

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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.