Home / 804,838.30-1,109,567.01-642,047.32

Finding the Fourth Proportional to 804,838.30, 1,109,567.01 and 642,047.32

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Solution

The fourth proportional to 804,838.30, 1,109,567.01 and 642,047.32 is: 885,139.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,838.30 : 1,109,567.01 = 642,047.32 : x
  2. Step 2: Convert to fraction form
    804,838.30/1,109,567.01 = 642,047.32/x
  3. Step 3: Cross multiply
    804,838.30x = 1,109,567.01 × 642,047.32
  4. Step 4: Simplify right side
    804,838.30x = 712,394,525,130.91
  5. Step 5: Solve for x
    x = 712,394,525,130.91/804,838.30
  6. Step 6: Final answer
    x = 885,139.94

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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.