Home / 428,766.04-643,154.50-162,455.02

Finding the Fourth Proportional to 428,766.04, 643,154.50 and 162,455.02

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Solution

The fourth proportional to 428,766.04, 643,154.50 and 162,455.02 is: 243,684.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,766.04 : 643,154.50 = 162,455.02 : x
  2. Step 2: Convert to fraction form
    428,766.04/643,154.50 = 162,455.02/x
  3. Step 3: Cross multiply
    428,766.04x = 643,154.50 × 162,455.02
  4. Step 4: Simplify right side
    428,766.04x = 104,483,677,160.59
  5. Step 5: Solve for x
    x = 104,483,677,160.59/428,766.04
  6. Step 6: Final answer
    x = 243,684.59

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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.