Home / 678,697.12-1,018,176.90-257,940.19

Finding the Fourth Proportional to 678,697.12, 1,018,176.90 and 257,940.19

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Solution

The fourth proportional to 678,697.12, 1,018,176.90 and 257,940.19 is: 386,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,697.12 : 1,018,176.90 = 257,940.19 : x
  2. Step 2: Convert to fraction form
    678,697.12/1,018,176.90 = 257,940.19/x
  3. Step 3: Cross multiply
    678,697.12x = 1,018,176.90 × 257,940.19
  4. Step 4: Simplify right side
    678,697.12x = 262,628,740,494.17
  5. Step 5: Solve for x
    x = 262,628,740,494.17/678,697.12
  6. Step 6: Final answer
    x = 386,960.15

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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.