Home / 1,315,411.20-1,973,116.80-318,139.20

Finding the Fourth Proportional to 1,315,411.20, 1,973,116.80 and 318,139.20

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Solution

The fourth proportional to 1,315,411.20, 1,973,116.80 and 318,139.20 is: 477,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,411.20 : 1,973,116.80 = 318,139.20 : x
  2. Step 2: Convert to fraction form
    1,315,411.20/1,973,116.80 = 318,139.20/x
  3. Step 3: Cross multiply
    1,315,411.20x = 1,973,116.80 × 318,139.20
  4. Step 4: Simplify right side
    1,315,411.20x = 627,725,800,258.56
  5. Step 5: Solve for x
    x = 627,725,800,258.56/1,315,411.20
  6. Step 6: Final answer
    x = 477,208.80

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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.