Home / 804,643.80-1,206,965.70-243,678.30

Finding the Fourth Proportional to 804,643.80, 1,206,965.70 and 243,678.30

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Solution

The fourth proportional to 804,643.80, 1,206,965.70 and 243,678.30 is: 365,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,643.80 : 1,206,965.70 = 243,678.30 : x
  2. Step 2: Convert to fraction form
    804,643.80/1,206,965.70 = 243,678.30/x
  3. Step 3: Cross multiply
    804,643.80x = 1,206,965.70 × 243,678.30
  4. Step 4: Simplify right side
    804,643.80x = 294,111,349,934.31
  5. Step 5: Solve for x
    x = 294,111,349,934.31/804,643.80
  6. Step 6: Final answer
    x = 365,517.45

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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.