Home / 920,273.64-1,380,549.78-289,128.12

Finding the Fourth Proportional to 920,273.64, 1,380,549.78 and 289,128.12

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Solution

The fourth proportional to 920,273.64, 1,380,549.78 and 289,128.12 is: 433,735.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,273.64 : 1,380,549.78 = 289,128.12 : x
  2. Step 2: Convert to fraction form
    920,273.64/1,380,549.78 = 289,128.12/x
  3. Step 3: Cross multiply
    920,273.64x = 1,380,549.78 × 289,128.12
  4. Step 4: Simplify right side
    920,273.64x = 399,155,762,457.81
  5. Step 5: Solve for x
    x = 399,155,762,457.81/920,273.64
  6. Step 6: Final answer
    x = 433,735.95

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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.