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Finding the Fourth Proportional to 4,985,502.12, 7,479,514.80 and 1,391,268.60

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Solution

The fourth proportional to 4,985,502.12, 7,479,514.80 and 1,391,268.60 is: 2,087,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985,502.12 : 7,479,514.80 = 1,391,268.60 : x
  2. Step 2: Convert to fraction form
    4,985,502.12/7,479,514.80 = 1,391,268.60/x
  3. Step 3: Cross multiply
    4,985,502.12x = 7,479,514.80 × 1,391,268.60
  4. Step 4: Simplify right side
    4,985,502.12x = 10,406,014,084,475.28
  5. Step 5: Solve for x
    x = 10,406,014,084,475.28/4,985,502.12
  6. Step 6: Final answer
    x = 2,087,254.97

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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.