Home / 920,120.80-1,380,699.60-359,082.40

Finding the Fourth Proportional to 920,120.80, 1,380,699.60 and 359,082.40

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Solution

The fourth proportional to 920,120.80, 1,380,699.60 and 359,082.40 is: 538,825.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,120.80 : 1,380,699.60 = 359,082.40 : x
  2. Step 2: Convert to fraction form
    920,120.80/1,380,699.60 = 359,082.40/x
  3. Step 3: Cross multiply
    920,120.80x = 1,380,699.60 × 359,082.40
  4. Step 4: Simplify right side
    920,120.80x = 495,784,926,047.04
  5. Step 5: Solve for x
    x = 495,784,926,047.04/920,120.80
  6. Step 6: Final answer
    x = 538,825.91

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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.