Home / 1,387,225-2,080,837.50-389,953

Finding the Fourth Proportional to 1,387,225, 2,080,837.50 and 389,953

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Solution

The fourth proportional to 1,387,225, 2,080,837.50 and 389,953 is: 584,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,225 : 2,080,837.50 = 389,953 : x
  2. Step 2: Convert to fraction form
    1,387,225/2,080,837.50 = 389,953/x
  3. Step 3: Cross multiply
    1,387,225x = 2,080,837.50 × 389,953
  4. Step 4: Simplify right side
    1,387,225x = 811,428,825,637.50
  5. Step 5: Solve for x
    x = 811,428,825,637.50/1,387,225
  6. Step 6: Final answer
    x = 584,929.50

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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.