Home / 990,999.90-1,367,797.59-651,499.74

Finding the Fourth Proportional to 990,999.90, 1,367,797.59 and 651,499.74

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Solution

The fourth proportional to 990,999.90, 1,367,797.59 and 651,499.74 is: 899,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,999.90 : 1,367,797.59 = 651,499.74 : x
  2. Step 2: Convert to fraction form
    990,999.90/1,367,797.59 = 651,499.74/x
  3. Step 3: Cross multiply
    990,999.90x = 1,367,797.59 × 651,499.74
  4. Step 4: Simplify right side
    990,999.90x = 891,119,774,257.63
  5. Step 5: Solve for x
    x = 891,119,774,257.63/990,999.90
  6. Step 6: Final answer
    x = 899,212.78

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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.