Home / 998,999.58-1,497,804.21-430,210.11

Finding the Fourth Proportional to 998,999.58, 1,497,804.21 and 430,210.11

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Solution

The fourth proportional to 998,999.58, 1,497,804.21 and 430,210.11 is: 645,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,999.58 : 1,497,804.21 = 430,210.11 : x
  2. Step 2: Convert to fraction form
    998,999.58/1,497,804.21 = 430,210.11/x
  3. Step 3: Cross multiply
    998,999.58x = 1,497,804.21 × 430,210.11
  4. Step 4: Simplify right side
    998,999.58x = 644,370,513,942.56
  5. Step 5: Solve for x
    x = 644,370,513,942.56/998,999.58
  6. Step 6: Final answer
    x = 645,015.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.