Home / 678,972.09-1,018,925.22-279,612.82

Finding the Fourth Proportional to 678,972.09, 1,018,925.22 and 279,612.82

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Solution

The fourth proportional to 678,972.09, 1,018,925.22 and 279,612.82 is: 419,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,972.09 : 1,018,925.22 = 279,612.82 : x
  2. Step 2: Convert to fraction form
    678,972.09/1,018,925.22 = 279,612.82/x
  3. Step 3: Cross multiply
    678,972.09x = 1,018,925.22 × 279,612.82
  4. Step 4: Simplify right side
    678,972.09x = 284,904,549,038.69
  5. Step 5: Solve for x
    x = 284,904,549,038.69/678,972.09
  6. Step 6: Final answer
    x = 419,611.58

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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.