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Finding the Fourth Proportional to 803,956.70, 1,206,712.65 and 489,028.70

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Solution

The fourth proportional to 803,956.70, 1,206,712.65 and 489,028.70 is: 734,016.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,956.70 : 1,206,712.65 = 489,028.70 : x
  2. Step 2: Convert to fraction form
    803,956.70/1,206,712.65 = 489,028.70/x
  3. Step 3: Cross multiply
    803,956.70x = 1,206,712.65 × 489,028.70
  4. Step 4: Simplify right side
    803,956.70x = 590,117,118,503.06
  5. Step 5: Solve for x
    x = 590,117,118,503.06/803,956.70
  6. Step 6: Final answer
    x = 734,016.05

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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.