Home / 621,270.25-856,931.46-403,089.12

Finding the Fourth Proportional to 621,270.25, 856,931.46 and 403,089.12

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Solution

The fourth proportional to 621,270.25, 856,931.46 and 403,089.12 is: 555,989.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,270.25 : 856,931.46 = 403,089.12 : x
  2. Step 2: Convert to fraction form
    621,270.25/856,931.46 = 403,089.12/x
  3. Step 3: Cross multiply
    621,270.25x = 856,931.46 × 403,089.12
  4. Step 4: Simplify right side
    621,270.25x = 345,419,748,111.72
  5. Step 5: Solve for x
    x = 345,419,748,111.72/621,270.25
  6. Step 6: Final answer
    x = 555,989.52

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.