Home / 879,564.29-1,213,696.32-492,400.91

Finding the Fourth Proportional to 879,564.29, 1,213,696.32 and 492,400.91

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Solution

The fourth proportional to 879,564.29, 1,213,696.32 and 492,400.91 is: 679,455.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,564.29 : 1,213,696.32 = 492,400.91 : x
  2. Step 2: Convert to fraction form
    879,564.29/1,213,696.32 = 492,400.91/x
  3. Step 3: Cross multiply
    879,564.29x = 1,213,696.32 × 492,400.91
  4. Step 4: Simplify right side
    879,564.29x = 597,625,172,431.65
  5. Step 5: Solve for x
    x = 597,625,172,431.65/879,564.29
  6. Step 6: Final answer
    x = 679,455.93

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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.