Home / 920,271.64-1,380,546.78-289,126.12

Finding the Fourth Proportional to 920,271.64, 1,380,546.78 and 289,126.12

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Solution

The fourth proportional to 920,271.64, 1,380,546.78 and 289,126.12 is: 433,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,271.64 : 1,380,546.78 = 289,126.12 : x
  2. Step 2: Convert to fraction form
    920,271.64/1,380,546.78 = 289,126.12/x
  3. Step 3: Cross multiply
    920,271.64x = 1,380,546.78 × 289,126.12
  4. Step 4: Simplify right side
    920,271.64x = 399,152,133,979.89
  5. Step 5: Solve for x
    x = 399,152,133,979.89/920,271.64
  6. Step 6: Final answer
    x = 433,732.95

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Double scale
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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.