Home / 678,669.40-1,018,004.10-674,003.80

Finding the Fourth Proportional to 678,669.40, 1,018,004.10 and 674,003.80

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Solution

The fourth proportional to 678,669.40, 1,018,004.10 and 674,003.80 is: 1,011,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,669.40 : 1,018,004.10 = 674,003.80 : x
  2. Step 2: Convert to fraction form
    678,669.40/1,018,004.10 = 674,003.80/x
  3. Step 3: Cross multiply
    678,669.40x = 1,018,004.10 × 674,003.80
  4. Step 4: Simplify right side
    678,669.40x = 686,138,631,815.58
  5. Step 5: Solve for x
    x = 686,138,631,815.58/678,669.40
  6. Step 6: Final answer
    x = 1,011,005.70

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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.