Home / 1,278,316.94-1,917,737.87-379,678.64

Finding the Fourth Proportional to 1,278,316.94, 1,917,737.87 and 379,678.64

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Solution

The fourth proportional to 1,278,316.94, 1,917,737.87 and 379,678.64 is: 569,595.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,316.94 : 1,917,737.87 = 379,678.64 : x
  2. Step 2: Convert to fraction form
    1,278,316.94/1,917,737.87 = 379,678.64/x
  3. Step 3: Cross multiply
    1,278,316.94x = 1,917,737.87 × 379,678.64
  4. Step 4: Simplify right side
    1,278,316.94x = 728,124,094,871.01
  5. Step 5: Solve for x
    x = 728,124,094,871.01/1,278,316.94
  6. Step 6: Final answer
    x = 569,595.91

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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.