Home / 12,798,078.30-19,197,117.45-12,443,784.30

Finding the Fourth Proportional to 12,798,078.30, 19,197,117.45 and 12,443,784.30

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Solution

The fourth proportional to 12,798,078.30, 19,197,117.45 and 12,443,784.30 is: 18,665,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798,078.30 : 19,197,117.45 = 12,443,784.30 : x
  2. Step 2: Convert to fraction form
    12,798,078.30/19,197,117.45 = 12,443,784.30/x
  3. Step 3: Cross multiply
    12,798,078.30x = 19,197,117.45 × 12,443,784.30
  4. Step 4: Simplify right side
    12,798,078.30x = 238,884,788,729,566.03
  5. Step 5: Solve for x
    x = 238,884,788,729,566.03/12,798,078.30
  6. Step 6: Final answer
    x = 18,665,676.45

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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.