Home / 678,457.69-1,017,690.05-397,778.11

Finding the Fourth Proportional to 678,457.69, 1,017,690.05 and 397,778.11

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Solution

The fourth proportional to 678,457.69, 1,017,690.05 and 397,778.11 is: 596,669.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,457.69 : 1,017,690.05 = 397,778.11 : x
  2. Step 2: Convert to fraction form
    678,457.69/1,017,690.05 = 397,778.11/x
  3. Step 3: Cross multiply
    678,457.69x = 1,017,690.05 × 397,778.11
  4. Step 4: Simplify right side
    678,457.69x = 404,814,824,654.81
  5. Step 5: Solve for x
    x = 404,814,824,654.81/678,457.69
  6. Step 6: Final answer
    x = 596,669.23

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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.