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Finding the Fourth Proportional to 490,274.10, 676,607.14 and 369,201.78

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Solution

The fourth proportional to 490,274.10, 676,607.14 and 369,201.78 is: 509,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,274.10 : 676,607.14 = 369,201.78 : x
  2. Step 2: Convert to fraction form
    490,274.10/676,607.14 = 369,201.78/x
  3. Step 3: Cross multiply
    490,274.10x = 676,607.14 × 369,201.78
  4. Step 4: Simplify right side
    490,274.10x = 249,804,560,448.71
  5. Step 5: Solve for x
    x = 249,804,560,448.71/490,274.10
  6. Step 6: Final answer
    x = 509,520.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.