Home / 920,667.34-1,380,059.88-621,178.30

Finding the Fourth Proportional to 920,667.34, 1,380,059.88 and 621,178.30

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Solution

The fourth proportional to 920,667.34, 1,380,059.88 and 621,178.30 is: 931,132.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,667.34 : 1,380,059.88 = 621,178.30 : x
  2. Step 2: Convert to fraction form
    920,667.34/1,380,059.88 = 621,178.30/x
  3. Step 3: Cross multiply
    920,667.34x = 1,380,059.88 × 621,178.30
  4. Step 4: Simplify right side
    920,667.34x = 857,263,250,156.60
  5. Step 5: Solve for x
    x = 857,263,250,156.60/920,667.34
  6. Step 6: Final answer
    x = 931,132.47

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Double scale
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Similar ratio
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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.