Home / 1,520,469.18-2,280,779.70-455,409.78

Finding the Fourth Proportional to 1,520,469.18, 2,280,779.70 and 455,409.78

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Solution

The fourth proportional to 1,520,469.18, 2,280,779.70 and 455,409.78 is: 683,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520,469.18 : 2,280,779.70 = 455,409.78 : x
  2. Step 2: Convert to fraction form
    1,520,469.18/2,280,779.70 = 455,409.78/x
  3. Step 3: Cross multiply
    1,520,469.18x = 2,280,779.70 × 455,409.78
  4. Step 4: Simplify right side
    1,520,469.18x = 1,038,689,381,405.47
  5. Step 5: Solve for x
    x = 1,038,689,381,405.47/1,520,469.18
  6. Step 6: Final answer
    x = 683,137.41

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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.