Home / 678,821.50-1,018,363.27-258,064.57

Finding the Fourth Proportional to 678,821.50, 1,018,363.27 and 258,064.57

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Solution

The fourth proportional to 678,821.50, 1,018,363.27 and 258,064.57 is: 387,146.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,821.50 : 1,018,363.27 = 258,064.57 : x
  2. Step 2: Convert to fraction form
    678,821.50/1,018,363.27 = 258,064.57/x
  3. Step 3: Cross multiply
    678,821.50x = 1,018,363.27 × 258,064.57
  4. Step 4: Simplify right side
    678,821.50x = 262,803,479,376.34
  5. Step 5: Solve for x
    x = 262,803,479,376.34/678,821.50
  6. Step 6: Final answer
    x = 387,146.66

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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.