Home / 1,335,869.20-2,003,609.40-389,141.20

Finding the Fourth Proportional to 1,335,869.20, 2,003,609.40 and 389,141.20

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Solution

The fourth proportional to 1,335,869.20, 2,003,609.40 and 389,141.20 is: 583,655.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,869.20 : 2,003,609.40 = 389,141.20 : x
  2. Step 2: Convert to fraction form
    1,335,869.20/2,003,609.40 = 389,141.20/x
  3. Step 3: Cross multiply
    1,335,869.20x = 2,003,609.40 × 389,141.20
  4. Step 4: Simplify right side
    1,335,869.20x = 779,686,966,247.28
  5. Step 5: Solve for x
    x = 779,686,966,247.28/1,335,869.20
  6. Step 6: Final answer
    x = 583,655.17

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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.