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Finding the Fourth Proportional to 869,063.60, 1,303,595.40 and 513,894.80

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Solution

The fourth proportional to 869,063.60, 1,303,595.40 and 513,894.80 is: 770,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,063.60 : 1,303,595.40 = 513,894.80 : x
  2. Step 2: Convert to fraction form
    869,063.60/1,303,595.40 = 513,894.80/x
  3. Step 3: Cross multiply
    869,063.60x = 1,303,595.40 × 513,894.80
  4. Step 4: Simplify right side
    869,063.60x = 669,910,897,363.92
  5. Step 5: Solve for x
    x = 669,910,897,363.92/869,063.60
  6. Step 6: Final answer
    x = 770,842.20

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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.