Home / 1,619,316.80-2,430,530.40-821,499.20

Finding the Fourth Proportional to 1,619,316.80, 2,430,530.40 and 821,499.20

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Solution

The fourth proportional to 1,619,316.80, 2,430,530.40 and 821,499.20 is: 1,233,037.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619,316.80 : 2,430,530.40 = 821,499.20 : x
  2. Step 2: Convert to fraction form
    1,619,316.80/2,430,530.40 = 821,499.20/x
  3. Step 3: Cross multiply
    1,619,316.80x = 2,430,530.40 × 821,499.20
  4. Step 4: Simplify right side
    1,619,316.80x = 1,996,678,779,175.68
  5. Step 5: Solve for x
    x = 1,996,678,779,175.68/1,619,316.80
  6. Step 6: Final answer
    x = 1,233,037.77

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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.