Home / 1,387,109.10-2,080,663.65-389,837.10

Finding the Fourth Proportional to 1,387,109.10, 2,080,663.65 and 389,837.10

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Solution

The fourth proportional to 1,387,109.10, 2,080,663.65 and 389,837.10 is: 584,755.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,109.10 : 2,080,663.65 = 389,837.10 : x
  2. Step 2: Convert to fraction form
    1,387,109.10/2,080,663.65 = 389,837.10/x
  3. Step 3: Cross multiply
    1,387,109.10x = 2,080,663.65 × 389,837.10
  4. Step 4: Simplify right side
    1,387,109.10x = 811,119,883,391.42
  5. Step 5: Solve for x
    x = 811,119,883,391.42/1,387,109.10
  6. Step 6: Final answer
    x = 584,755.65

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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.