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Finding the Fourth Proportional to 567,454.40, 850,015.20 and 390,161.60

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Solution

The fourth proportional to 567,454.40, 850,015.20 and 390,161.60 is: 584,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,454.40 : 850,015.20 = 390,161.60 : x
  2. Step 2: Convert to fraction form
    567,454.40/850,015.20 = 390,161.60/x
  3. Step 3: Cross multiply
    567,454.40x = 850,015.20 × 390,161.60
  4. Step 4: Simplify right side
    567,454.40x = 331,643,290,456.32
  5. Step 5: Solve for x
    x = 331,643,290,456.32/567,454.40
  6. Step 6: Final answer
    x = 584,440.42

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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.