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Finding the Fourth Proportional to 539,434.40, 743,998.82 and 345,860.60

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Solution

The fourth proportional to 539,434.40, 743,998.82 and 345,860.60 is: 477,017.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,434.40 : 743,998.82 = 345,860.60 : x
  2. Step 2: Convert to fraction form
    539,434.40/743,998.82 = 345,860.60/x
  3. Step 3: Cross multiply
    539,434.40x = 743,998.82 × 345,860.60
  4. Step 4: Simplify right side
    539,434.40x = 257,319,872,835.20
  5. Step 5: Solve for x
    x = 257,319,872,835.20/539,434.40
  6. Step 6: Final answer
    x = 477,017.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.