Home / 1,098,987.20-1,648,675.20-389,427.20

Finding the Fourth Proportional to 1,098,987.20, 1,648,675.20 and 389,427.20

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Solution

The fourth proportional to 1,098,987.20, 1,648,675.20 and 389,427.20 is: 584,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,987.20 : 1,648,675.20 = 389,427.20 : x
  2. Step 2: Convert to fraction form
    1,098,987.20/1,648,675.20 = 389,427.20/x
  3. Step 3: Cross multiply
    1,098,987.20x = 1,648,675.20 × 389,427.20
  4. Step 4: Simplify right side
    1,098,987.20x = 642,038,966,845.44
  5. Step 5: Solve for x
    x = 642,038,966,845.44/1,098,987.20
  6. Step 6: Final answer
    x = 584,209.69

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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.