Home / 828,000.80-1,242,001.20-450,087.20

Finding the Fourth Proportional to 828,000.80, 1,242,001.20 and 450,087.20

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Solution

The fourth proportional to 828,000.80, 1,242,001.20 and 450,087.20 is: 675,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,000.80 : 1,242,001.20 = 450,087.20 : x
  2. Step 2: Convert to fraction form
    828,000.80/1,242,001.20 = 450,087.20/x
  3. Step 3: Cross multiply
    828,000.80x = 1,242,001.20 × 450,087.20
  4. Step 4: Simplify right side
    828,000.80x = 559,008,842,504.64
  5. Step 5: Solve for x
    x = 559,008,842,504.64/828,000.80
  6. Step 6: Final answer
    x = 675,130.80

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