Home / 678,881.92-1,017,932.64-279,798.16

Finding the Fourth Proportional to 678,881.92, 1,017,932.64 and 279,798.16

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Solution

The fourth proportional to 678,881.92, 1,017,932.64 and 279,798.16 is: 419,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,881.92 : 1,017,932.64 = 279,798.16 : x
  2. Step 2: Convert to fraction form
    678,881.92/1,017,932.64 = 279,798.16/x
  3. Step 3: Cross multiply
    678,881.92x = 1,017,932.64 × 279,798.16
  4. Step 4: Simplify right side
    678,881.92x = 284,815,679,675.94
  5. Step 5: Solve for x
    x = 284,815,679,675.94/678,881.92
  6. Step 6: Final answer
    x = 419,536.40

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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.