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Finding the Fourth Proportional to 798,414.40, 1,197,621.60 and 787,916.80

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Solution

The fourth proportional to 798,414.40, 1,197,621.60 and 787,916.80 is: 1,181,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    798,414.40 : 1,197,621.60 = 787,916.80 : x
  2. Step 2: Convert to fraction form
    798,414.40/1,197,621.60 = 787,916.80/x
  3. Step 3: Cross multiply
    798,414.40x = 1,197,621.60 × 787,916.80
  4. Step 4: Simplify right side
    798,414.40x = 943,626,178,682.88
  5. Step 5: Solve for x
    x = 943,626,178,682.88/798,414.40
  6. Step 6: Final answer
    x = 1,181,875.20

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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.