Home / 678,612.40-1,018,334.60-279,444.40

Finding the Fourth Proportional to 678,612.40, 1,018,334.60 and 279,444.40

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Solution

The fourth proportional to 678,612.40, 1,018,334.60 and 279,444.40 is: 419,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,612.40 : 1,018,334.60 = 279,444.40 : x
  2. Step 2: Convert to fraction form
    678,612.40/1,018,334.60 = 279,444.40/x
  3. Step 3: Cross multiply
    678,612.40x = 1,018,334.60 × 279,444.40
  4. Step 4: Simplify right side
    678,612.40x = 284,567,901,296.24
  5. Step 5: Solve for x
    x = 284,567,901,296.24/678,612.40
  6. Step 6: Final answer
    x = 419,337.90

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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.