Home / 678,649.80-1,017,974.70-662,903.40

Finding the Fourth Proportional to 678,649.80, 1,017,974.70 and 662,903.40

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Solution

The fourth proportional to 678,649.80, 1,017,974.70 and 662,903.40 is: 994,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,649.80 : 1,017,974.70 = 662,903.40 : x
  2. Step 2: Convert to fraction form
    678,649.80/1,017,974.70 = 662,903.40/x
  3. Step 3: Cross multiply
    678,649.80x = 1,017,974.70 × 662,903.40
  4. Step 4: Simplify right side
    678,649.80x = 674,818,889,743.98
  5. Step 5: Solve for x
    x = 674,818,889,743.98/678,649.80
  6. Step 6: Final answer
    x = 994,355.10

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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.