Home / 817,927.82-1,128,718.38-455,351.72

Finding the Fourth Proportional to 817,927.82, 1,128,718.38 and 455,351.72

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Solution

The fourth proportional to 817,927.82, 1,128,718.38 and 455,351.72 is: 628,373.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,927.82 : 1,128,718.38 = 455,351.72 : x
  2. Step 2: Convert to fraction form
    817,927.82/1,128,718.38 = 455,351.72/x
  3. Step 3: Cross multiply
    817,927.82x = 1,128,718.38 × 455,351.72
  4. Step 4: Simplify right side
    817,927.82x = 513,963,850,085.02
  5. Step 5: Solve for x
    x = 513,963,850,085.02/817,927.82
  6. Step 6: Final answer
    x = 628,373.12

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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.