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Finding the Fourth Proportional to 1,966,272.75, 2,948,695.51 and 686,520.94

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Solution

The fourth proportional to 1,966,272.75, 2,948,695.51 and 686,520.94 is: 1,029,532.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966,272.75 : 2,948,695.51 = 686,520.94 : x
  2. Step 2: Convert to fraction form
    1,966,272.75/2,948,695.51 = 686,520.94/x
  3. Step 3: Cross multiply
    1,966,272.75x = 2,948,695.51 × 686,520.94
  4. Step 4: Simplify right side
    1,966,272.75x = 2,024,341,209,866.37
  5. Step 5: Solve for x
    x = 2,024,341,209,866.37/1,966,272.75
  6. Step 6: Final answer
    x = 1,029,532.25

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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.