Home / 804,374.40-1,207,339.20-405,465.60

Finding the Fourth Proportional to 804,374.40, 1,207,339.20 and 405,465.60

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Solution

The fourth proportional to 804,374.40, 1,207,339.20 and 405,465.60 is: 608,590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,374.40 : 1,207,339.20 = 405,465.60 : x
  2. Step 2: Convert to fraction form
    804,374.40/1,207,339.20 = 405,465.60/x
  3. Step 3: Cross multiply
    804,374.40x = 1,207,339.20 × 405,465.60
  4. Step 4: Simplify right side
    804,374.40x = 489,534,513,131.52
  5. Step 5: Solve for x
    x = 489,534,513,131.52/804,374.40
  6. Step 6: Final answer
    x = 608,590.37

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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.