Home / 817,629.68-1,128,317.70-455,053.47

Finding the Fourth Proportional to 817,629.68, 1,128,317.70 and 455,053.47

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Solution

The fourth proportional to 817,629.68, 1,128,317.70 and 455,053.47 is: 627,967.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,629.68 : 1,128,317.70 = 455,053.47 : x
  2. Step 2: Convert to fraction form
    817,629.68/1,128,317.70 = 455,053.47/x
  3. Step 3: Cross multiply
    817,629.68x = 1,128,317.70 × 455,053.47
  4. Step 4: Simplify right side
    817,629.68x = 513,444,884,647.42
  5. Step 5: Solve for x
    x = 513,444,884,647.42/817,629.68
  6. Step 6: Final answer
    x = 627,967.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.