Home / 678,776.80-1,018,165.20-663,224.80

Finding the Fourth Proportional to 678,776.80, 1,018,165.20 and 663,224.80

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Solution

The fourth proportional to 678,776.80, 1,018,165.20 and 663,224.80 is: 994,837.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,776.80 : 1,018,165.20 = 663,224.80 : x
  2. Step 2: Convert to fraction form
    678,776.80/1,018,165.20 = 663,224.80/x
  3. Step 3: Cross multiply
    678,776.80x = 1,018,165.20 × 663,224.80
  4. Step 4: Simplify right side
    678,776.80x = 675,272,411,136.96
  5. Step 5: Solve for x
    x = 675,272,411,136.96/678,776.80
  6. Step 6: Final answer
    x = 994,837.20

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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.