Home / 854,156.80-1,280,579.10-480,179.80

Finding the Fourth Proportional to 854,156.80, 1,280,579.10 and 480,179.80

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Solution

The fourth proportional to 854,156.80, 1,280,579.10 and 480,179.80 is: 719,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,156.80 : 1,280,579.10 = 480,179.80 : x
  2. Step 2: Convert to fraction form
    854,156.80/1,280,579.10 = 480,179.80/x
  3. Step 3: Cross multiply
    854,156.80x = 1,280,579.10 × 480,179.80
  4. Step 4: Simplify right side
    854,156.80x = 614,908,216,122.18
  5. Step 5: Solve for x
    x = 614,908,216,122.18/854,156.80
  6. Step 6: Final answer
    x = 719,900.86

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1.5x scale

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.