Home / 1,230,641.40-1,845,789.30-389,278.20

Finding the Fourth Proportional to 1,230,641.40, 1,845,789.30 and 389,278.20

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Solution

The fourth proportional to 1,230,641.40, 1,845,789.30 and 389,278.20 is: 583,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,641.40 : 1,845,789.30 = 389,278.20 : x
  2. Step 2: Convert to fraction form
    1,230,641.40/1,845,789.30 = 389,278.20/x
  3. Step 3: Cross multiply
    1,230,641.40x = 1,845,789.30 × 389,278.20
  4. Step 4: Simplify right side
    1,230,641.40x = 718,525,536,283.26
  5. Step 5: Solve for x
    x = 718,525,536,283.26/1,230,641.40
  6. Step 6: Final answer
    x = 583,862.64

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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.