Home / 687,485.73-1,031,212.77-404,968.47

Finding the Fourth Proportional to 687,485.73, 1,031,212.77 and 404,968.47

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Solution

The fourth proportional to 687,485.73, 1,031,212.77 and 404,968.47 is: 607,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,485.73 : 1,031,212.77 = 404,968.47 : x
  2. Step 2: Convert to fraction form
    687,485.73/1,031,212.77 = 404,968.47/x
  3. Step 3: Cross multiply
    687,485.73x = 1,031,212.77 × 404,968.47
  4. Step 4: Simplify right side
    687,485.73x = 417,608,657,711.36
  5. Step 5: Solve for x
    x = 417,608,657,711.36/687,485.73
  6. Step 6: Final answer
    x = 607,443.38

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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.