Home / 651,691.20-977,536.80-385,314.60

Finding the Fourth Proportional to 651,691.20, 977,536.80 and 385,314.60

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Solution

The fourth proportional to 651,691.20, 977,536.80 and 385,314.60 is: 577,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,691.20 : 977,536.80 = 385,314.60 : x
  2. Step 2: Convert to fraction form
    651,691.20/977,536.80 = 385,314.60/x
  3. Step 3: Cross multiply
    651,691.20x = 977,536.80 × 385,314.60
  4. Step 4: Simplify right side
    651,691.20x = 376,659,201,077.28
  5. Step 5: Solve for x
    x = 376,659,201,077.28/651,691.20
  6. Step 6: Final answer
    x = 577,971.90

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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.