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Finding the Fourth Proportional to 411,278.80, 616,918.20 and 317,966.80

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Solution

The fourth proportional to 411,278.80, 616,918.20 and 317,966.80 is: 476,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,278.80 : 616,918.20 = 317,966.80 : x
  2. Step 2: Convert to fraction form
    411,278.80/616,918.20 = 317,966.80/x
  3. Step 3: Cross multiply
    411,278.80x = 616,918.20 × 317,966.80
  4. Step 4: Simplify right side
    411,278.80x = 196,159,505,915.76
  5. Step 5: Solve for x
    x = 196,159,505,915.76/411,278.80
  6. Step 6: Final answer
    x = 476,950.20

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1.5x scale

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.