Home / 1,280,951.38-1,921,526.29-428,025.98

Finding the Fourth Proportional to 1,280,951.38, 1,921,526.29 and 428,025.98

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Solution

The fourth proportional to 1,280,951.38, 1,921,526.29 and 428,025.98 is: 642,072.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,951.38 : 1,921,526.29 = 428,025.98 : x
  2. Step 2: Convert to fraction form
    1,280,951.38/1,921,526.29 = 428,025.98/x
  3. Step 3: Cross multiply
    1,280,951.38x = 1,921,526.29 × 428,025.98
  4. Step 4: Simplify right side
    1,280,951.38x = 822,463,173,373.01
  5. Step 5: Solve for x
    x = 822,463,173,373.01/1,280,951.38
  6. Step 6: Final answer
    x = 642,072.12

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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.