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Finding the Fourth Proportional to 1,038,781.62, 1,558,764.36 and 829,748.16

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Solution

The fourth proportional to 1,038,781.62, 1,558,764.36 and 829,748.16 is: 1,245,095.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,781.62 : 1,558,764.36 = 829,748.16 : x
  2. Step 2: Convert to fraction form
    1,038,781.62/1,558,764.36 = 829,748.16/x
  3. Step 3: Cross multiply
    1,038,781.62x = 1,558,764.36 × 829,748.16
  4. Step 4: Simplify right side
    1,038,781.62x = 1,293,381,859,583.58
  5. Step 5: Solve for x
    x = 1,293,381,859,583.58/1,038,781.62
  6. Step 6: Final answer
    x = 1,245,095.06

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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.