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Finding the Fourth Proportional to 553,676.80, 830,515.20 and 301,078.30

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Solution

The fourth proportional to 553,676.80, 830,515.20 and 301,078.30 is: 451,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,676.80 : 830,515.20 = 301,078.30 : x
  2. Step 2: Convert to fraction form
    553,676.80/830,515.20 = 301,078.30/x
  3. Step 3: Cross multiply
    553,676.80x = 830,515.20 × 301,078.30
  4. Step 4: Simplify right side
    553,676.80x = 250,050,104,540.16
  5. Step 5: Solve for x
    x = 250,050,104,540.16/553,676.80
  6. Step 6: Final answer
    x = 451,617.45

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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.