Home / 678,809.40-1,018,214.10-674,662.20

Finding the Fourth Proportional to 678,809.40, 1,018,214.10 and 674,662.20

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Solution

The fourth proportional to 678,809.40, 1,018,214.10 and 674,662.20 is: 1,011,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,809.40 : 1,018,214.10 = 674,662.20 : x
  2. Step 2: Convert to fraction form
    678,809.40/1,018,214.10 = 674,662.20/x
  3. Step 3: Cross multiply
    678,809.40x = 1,018,214.10 × 674,662.20
  4. Step 4: Simplify right side
    678,809.40x = 686,950,564,777.02
  5. Step 5: Solve for x
    x = 686,950,564,777.02/678,809.40
  6. Step 6: Final answer
    x = 1,011,993.30

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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.