Home / 999,305.81-1,499,530.07-422,883.69

Finding the Fourth Proportional to 999,305.81, 1,499,530.07 and 422,883.69

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Solution

The fourth proportional to 999,305.81, 1,499,530.07 and 422,883.69 is: 634,567.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,305.81 : 1,499,530.07 = 422,883.69 : x
  2. Step 2: Convert to fraction form
    999,305.81/1,499,530.07 = 422,883.69/x
  3. Step 3: Cross multiply
    999,305.81x = 1,499,530.07 × 422,883.69
  4. Step 4: Simplify right side
    999,305.81x = 634,126,802,322.81
  5. Step 5: Solve for x
    x = 634,126,802,322.81/999,305.81
  6. Step 6: Final answer
    x = 634,567.31

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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.