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Finding the Fourth Proportional to 806,476.83, 1,209,718.41 and 326,713.70

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Solution

The fourth proportional to 806,476.83, 1,209,718.41 and 326,713.70 is: 490,071.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,476.83 : 1,209,718.41 = 326,713.70 : x
  2. Step 2: Convert to fraction form
    806,476.83/1,209,718.41 = 326,713.70/x
  3. Step 3: Cross multiply
    806,476.83x = 1,209,718.41 × 326,713.70
  4. Step 4: Simplify right side
    806,476.83x = 395,231,579,488.34
  5. Step 5: Solve for x
    x = 395,231,579,488.34/806,476.83
  6. Step 6: Final answer
    x = 490,071.84

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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.