Home / 808,538.20-1,212,807.30-275,979.40

Finding the Fourth Proportional to 808,538.20, 1,212,807.30 and 275,979.40

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Solution

The fourth proportional to 808,538.20, 1,212,807.30 and 275,979.40 is: 413,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,538.20 : 1,212,807.30 = 275,979.40 : x
  2. Step 2: Convert to fraction form
    808,538.20/1,212,807.30 = 275,979.40/x
  3. Step 3: Cross multiply
    808,538.20x = 1,212,807.30 × 275,979.40
  4. Step 4: Simplify right side
    808,538.20x = 334,709,830,969.62
  5. Step 5: Solve for x
    x = 334,709,830,969.62/808,538.20
  6. Step 6: Final answer
    x = 413,969.10

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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.