Home / 678,867.75-1,018,432.76-258,110.91

Finding the Fourth Proportional to 678,867.75, 1,018,432.76 and 258,110.91

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Solution

The fourth proportional to 678,867.75, 1,018,432.76 and 258,110.91 is: 387,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,867.75 : 1,018,432.76 = 258,110.91 : x
  2. Step 2: Convert to fraction form
    678,867.75/1,018,432.76 = 258,110.91/x
  3. Step 3: Cross multiply
    678,867.75x = 1,018,432.76 × 258,110.91
  4. Step 4: Simplify right side
    678,867.75x = 262,868,605,166.86
  5. Step 5: Solve for x
    x = 262,868,605,166.86/678,867.75
  6. Step 6: Final answer
    x = 387,216.22

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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.