Home / 678,664.48-1,017,959.28-279,204.16

Finding the Fourth Proportional to 678,664.48, 1,017,959.28 and 279,204.16

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Solution

The fourth proportional to 678,664.48, 1,017,959.28 and 279,204.16 is: 418,790.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,664.48 : 1,017,959.28 = 279,204.16 : x
  2. Step 2: Convert to fraction form
    678,664.48/1,017,959.28 = 279,204.16/x
  3. Step 3: Cross multiply
    678,664.48x = 1,017,959.28 × 279,204.16
  4. Step 4: Simplify right side
    678,664.48x = 284,218,465,686.61
  5. Step 5: Solve for x
    x = 284,218,465,686.61/678,664.48
  6. Step 6: Final answer
    x = 418,790.84

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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.