Home / 998,648.36-1,499,038.74-430,309.96

Finding the Fourth Proportional to 998,648.36, 1,499,038.74 and 430,309.96

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Solution

The fourth proportional to 998,648.36, 1,499,038.74 and 430,309.96 is: 645,924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,648.36 : 1,499,038.74 = 430,309.96 : x
  2. Step 2: Convert to fraction form
    998,648.36/1,499,038.74 = 430,309.96/x
  3. Step 3: Cross multiply
    998,648.36x = 1,499,038.74 × 430,309.96
  4. Step 4: Simplify right side
    998,648.36x = 645,051,300,247.85
  5. Step 5: Solve for x
    x = 645,051,300,247.85/998,648.36
  6. Step 6: Final answer
    x = 645,924.36

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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.