Home / 678,541.20-1,018,200.60-258,118.80

Finding the Fourth Proportional to 678,541.20, 1,018,200.60 and 258,118.80

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Solution

The fourth proportional to 678,541.20, 1,018,200.60 and 258,118.80 is: 387,326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,541.20 : 1,018,200.60 = 258,118.80 : x
  2. Step 2: Convert to fraction form
    678,541.20/1,018,200.60 = 258,118.80/x
  3. Step 3: Cross multiply
    678,541.20x = 1,018,200.60 × 258,118.80
  4. Step 4: Simplify right side
    678,541.20x = 262,816,717,031.28
  5. Step 5: Solve for x
    x = 262,816,717,031.28/678,541.20
  6. Step 6: Final answer
    x = 387,326.10

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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.