Home / 804,835.86-1,109,563.68-642,044.90

Finding the Fourth Proportional to 804,835.86, 1,109,563.68 and 642,044.90

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Solution

The fourth proportional to 804,835.86, 1,109,563.68 and 642,044.90 is: 885,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,835.86 : 1,109,563.68 = 642,044.90 : x
  2. Step 2: Convert to fraction form
    804,835.86/1,109,563.68 = 642,044.90/x
  3. Step 3: Cross multiply
    804,835.86x = 1,109,563.68 × 642,044.90
  4. Step 4: Simplify right side
    804,835.86x = 712,389,696,421.41
  5. Step 5: Solve for x
    x = 712,389,696,421.41/804,835.86
  6. Step 6: Final answer
    x = 885,136.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.