Home / 699,620.09-1,047,748.40-399,189.87

Finding the Fourth Proportional to 699,620.09, 1,047,748.40 and 399,189.87

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Solution

The fourth proportional to 699,620.09, 1,047,748.40 and 399,189.87 is: 597,825.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,620.09 : 1,047,748.40 = 399,189.87 : x
  2. Step 2: Convert to fraction form
    699,620.09/1,047,748.40 = 399,189.87/x
  3. Step 3: Cross multiply
    699,620.09x = 1,047,748.40 × 399,189.87
  4. Step 4: Simplify right side
    699,620.09x = 418,250,547,089.72
  5. Step 5: Solve for x
    x = 418,250,547,089.72/699,620.09
  6. Step 6: Final answer
    x = 597,825.24

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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.