Home / 678,752.10-1,018,349.60-323,720.01

Finding the Fourth Proportional to 678,752.10, 1,018,349.60 and 323,720.01

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Solution

The fourth proportional to 678,752.10, 1,018,349.60 and 323,720.01 is: 485,685.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,752.10 : 1,018,349.60 = 323,720.01 : x
  2. Step 2: Convert to fraction form
    678,752.10/1,018,349.60 = 323,720.01/x
  3. Step 3: Cross multiply
    678,752.10x = 1,018,349.60 × 323,720.01
  4. Step 4: Simplify right side
    678,752.10x = 329,660,141,076.90
  5. Step 5: Solve for x
    x = 329,660,141,076.90/678,752.10
  6. Step 6: Final answer
    x = 485,685.63

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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.