Home / 856,405.40-1,284,608.10-501,819.80

Finding the Fourth Proportional to 856,405.40, 1,284,608.10 and 501,819.80

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Solution

The fourth proportional to 856,405.40, 1,284,608.10 and 501,819.80 is: 752,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,405.40 : 1,284,608.10 = 501,819.80 : x
  2. Step 2: Convert to fraction form
    856,405.40/1,284,608.10 = 501,819.80/x
  3. Step 3: Cross multiply
    856,405.40x = 1,284,608.10 × 501,819.80
  4. Step 4: Simplify right side
    856,405.40x = 644,641,779,820.38
  5. Step 5: Solve for x
    x = 644,641,779,820.38/856,405.40
  6. Step 6: Final answer
    x = 752,729.70

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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.