Home / 1,420,315.20-2,128,658.40-577,915.20

Finding the Fourth Proportional to 1,420,315.20, 2,128,658.40 and 577,915.20

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Solution

The fourth proportional to 1,420,315.20, 2,128,658.40 and 577,915.20 is: 866,134.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,315.20 : 2,128,658.40 = 577,915.20 : x
  2. Step 2: Convert to fraction form
    1,420,315.20/2,128,658.40 = 577,915.20/x
  3. Step 3: Cross multiply
    1,420,315.20x = 2,128,658.40 × 577,915.20
  4. Step 4: Simplify right side
    1,420,315.20x = 1,230,184,044,967.68
  5. Step 5: Solve for x
    x = 1,230,184,044,967.68/1,420,315.20
  6. Step 6: Final answer
    x = 866,134.53

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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.