Home / 389,023.12-583,534.62-122,970.40

Finding the Fourth Proportional to 389,023.12, 583,534.62 and 122,970.40

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Solution

The fourth proportional to 389,023.12, 583,534.62 and 122,970.40 is: 184,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,023.12 : 583,534.62 = 122,970.40 : x
  2. Step 2: Convert to fraction form
    389,023.12/583,534.62 = 122,970.40/x
  3. Step 3: Cross multiply
    389,023.12x = 583,534.62 × 122,970.40
  4. Step 4: Simplify right side
    389,023.12x = 71,757,485,635.25
  5. Step 5: Solve for x
    x = 71,757,485,635.25/389,023.12
  6. Step 6: Final answer
    x = 184,455.58

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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.