Home / 804,814.40-1,207,221.60-521,379.20

Finding the Fourth Proportional to 804,814.40, 1,207,221.60 and 521,379.20

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Solution

The fourth proportional to 804,814.40, 1,207,221.60 and 521,379.20 is: 782,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,814.40 : 1,207,221.60 = 521,379.20 : x
  2. Step 2: Convert to fraction form
    804,814.40/1,207,221.60 = 521,379.20/x
  3. Step 3: Cross multiply
    804,814.40x = 1,207,221.60 × 521,379.20
  4. Step 4: Simplify right side
    804,814.40x = 629,420,232,030.72
  5. Step 5: Solve for x
    x = 629,420,232,030.72/804,814.40
  6. Step 6: Final answer
    x = 782,068.80

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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.