Home / 804,638.10-1,206,957.15-431,390.10

Finding the Fourth Proportional to 804,638.10, 1,206,957.15 and 431,390.10

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Solution

The fourth proportional to 804,638.10, 1,206,957.15 and 431,390.10 is: 647,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,638.10 : 1,206,957.15 = 431,390.10 : x
  2. Step 2: Convert to fraction form
    804,638.10/1,206,957.15 = 431,390.10/x
  3. Step 3: Cross multiply
    804,638.10x = 1,206,957.15 × 431,390.10
  4. Step 4: Simplify right side
    804,638.10x = 520,669,365,634.22
  5. Step 5: Solve for x
    x = 520,669,365,634.22/804,638.10
  6. Step 6: Final answer
    x = 647,085.15

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Double scale
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Similar ratio
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1.5x scale

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.