Home / 678,917.40-1,018,522.98-258,201.24

Finding the Fourth Proportional to 678,917.40, 1,018,522.98 and 258,201.24

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Solution

The fourth proportional to 678,917.40, 1,018,522.98 and 258,201.24 is: 387,357.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,917.40 : 1,018,522.98 = 258,201.24 : x
  2. Step 2: Convert to fraction form
    678,917.40/1,018,522.98 = 258,201.24/x
  3. Step 3: Cross multiply
    678,917.40x = 1,018,522.98 × 258,201.24
  4. Step 4: Simplify right side
    678,917.40x = 262,983,896,404.50
  5. Step 5: Solve for x
    x = 262,983,896,404.50/678,917.40
  6. Step 6: Final answer
    x = 387,357.72

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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.