Home / 678,698.10-1,018,047.15-451,359.45

Finding the Fourth Proportional to 678,698.10, 1,018,047.15 and 451,359.45

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Solution

The fourth proportional to 678,698.10, 1,018,047.15 and 451,359.45 is: 677,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,698.10 : 1,018,047.15 = 451,359.45 : x
  2. Step 2: Convert to fraction form
    678,698.10/1,018,047.15 = 451,359.45/x
  3. Step 3: Cross multiply
    678,698.10x = 1,018,047.15 × 451,359.45
  4. Step 4: Simplify right side
    678,698.10x = 459,505,201,698.07
  5. Step 5: Solve for x
    x = 459,505,201,698.07/678,698.10
  6. Step 6: Final answer
    x = 677,039.18

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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.