Home / 678,447.75-1,018,138.23-235,215.75

Finding the Fourth Proportional to 678,447.75, 1,018,138.23 and 235,215.75

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Solution

The fourth proportional to 678,447.75, 1,018,138.23 and 235,215.75 is: 352,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,447.75 : 1,018,138.23 = 235,215.75 : x
  2. Step 2: Convert to fraction form
    678,447.75/1,018,138.23 = 235,215.75/x
  3. Step 3: Cross multiply
    678,447.75x = 1,018,138.23 × 235,215.75
  4. Step 4: Simplify right side
    678,447.75x = 239,482,147,373.12
  5. Step 5: Solve for x
    x = 239,482,147,373.12/678,447.75
  6. Step 6: Final answer
    x = 352,985.40

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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.