Home / 1,315,731.20-1,973,596.80-318,459.20

Finding the Fourth Proportional to 1,315,731.20, 1,973,596.80 and 318,459.20

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Solution

The fourth proportional to 1,315,731.20, 1,973,596.80 and 318,459.20 is: 477,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,731.20 : 1,973,596.80 = 318,459.20 : x
  2. Step 2: Convert to fraction form
    1,315,731.20/1,973,596.80 = 318,459.20/x
  3. Step 3: Cross multiply
    1,315,731.20x = 1,973,596.80 × 318,459.20
  4. Step 4: Simplify right side
    1,315,731.20x = 628,510,058,050.56
  5. Step 5: Solve for x
    x = 628,510,058,050.56/1,315,731.20
  6. Step 6: Final answer
    x = 477,688.80

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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.