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Finding the Fourth Proportional to 542,840.40, 814,260.60 and 374,878.80

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Solution

The fourth proportional to 542,840.40, 814,260.60 and 374,878.80 is: 562,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,840.40 : 814,260.60 = 374,878.80 : x
  2. Step 2: Convert to fraction form
    542,840.40/814,260.60 = 374,878.80/x
  3. Step 3: Cross multiply
    542,840.40x = 814,260.60 × 374,878.80
  4. Step 4: Simplify right side
    542,840.40x = 305,249,036,615.28
  5. Step 5: Solve for x
    x = 305,249,036,615.28/542,840.40
  6. Step 6: Final answer
    x = 562,318.20

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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.