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Finding the Fourth Proportional to 806,768.40, 1,208,309.40 and 474,992.40

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Solution

The fourth proportional to 806,768.40, 1,208,309.40 and 474,992.40 is: 711,403.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,768.40 : 1,208,309.40 = 474,992.40 : x
  2. Step 2: Convert to fraction form
    806,768.40/1,208,309.40 = 474,992.40/x
  3. Step 3: Cross multiply
    806,768.40x = 1,208,309.40 × 474,992.40
  4. Step 4: Simplify right side
    806,768.40x = 573,937,781,848.56
  5. Step 5: Solve for x
    x = 573,937,781,848.56/806,768.40
  6. Step 6: Final answer
    x = 711,403.40

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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.