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Finding the Fourth Proportional to 803,568.60, 1,203,020.10 and 780,240.60

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Solution

The fourth proportional to 803,568.60, 1,203,020.10 and 780,240.60 is: 1,168,095.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,568.60 : 1,203,020.10 = 780,240.60 : x
  2. Step 2: Convert to fraction form
    803,568.60/1,203,020.10 = 780,240.60/x
  3. Step 3: Cross multiply
    803,568.60x = 1,203,020.10 × 780,240.60
  4. Step 4: Simplify right side
    803,568.60x = 938,645,124,636.06
  5. Step 5: Solve for x
    x = 938,645,124,636.06/803,568.60
  6. Step 6: Final answer
    x = 1,168,095.82

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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.