Home / 806,445.40-1,209,813.90-406,078.60

Finding the Fourth Proportional to 806,445.40, 1,209,813.90 and 406,078.60

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Solution

The fourth proportional to 806,445.40, 1,209,813.90 and 406,078.60 is: 609,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,445.40 : 1,209,813.90 = 406,078.60 : x
  2. Step 2: Convert to fraction form
    806,445.40/1,209,813.90 = 406,078.60/x
  3. Step 3: Cross multiply
    806,445.40x = 1,209,813.90 × 406,078.60
  4. Step 4: Simplify right side
    806,445.40x = 491,279,534,772.54
  5. Step 5: Solve for x
    x = 491,279,534,772.54/806,445.40
  6. Step 6: Final answer
    x = 609,191.32

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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.