Home / 990,740.57-1,367,640.51-668,886.62

Finding the Fourth Proportional to 990,740.57, 1,367,640.51 and 668,886.62

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Solution

The fourth proportional to 990,740.57, 1,367,640.51 and 668,886.62 is: 923,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,740.57 : 1,367,640.51 = 668,886.62 : x
  2. Step 2: Convert to fraction form
    990,740.57/1,367,640.51 = 668,886.62/x
  3. Step 3: Cross multiply
    990,740.57x = 1,367,640.51 × 668,886.62
  4. Step 4: Simplify right side
    990,740.57x = 914,796,438,108.98
  5. Step 5: Solve for x
    x = 914,796,438,108.98/990,740.57
  6. Step 6: Final answer
    x = 923,346.10

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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.