Home / 1,287,464.73-1,931,197.09-686,605.52

Finding the Fourth Proportional to 1,287,464.73, 1,931,197.09 and 686,605.52

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Solution

The fourth proportional to 1,287,464.73, 1,931,197.09 and 686,605.52 is: 1,029,908.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,464.73 : 1,931,197.09 = 686,605.52 : x
  2. Step 2: Convert to fraction form
    1,287,464.73/1,931,197.09 = 686,605.52/x
  3. Step 3: Cross multiply
    1,287,464.73x = 1,931,197.09 × 686,605.52
  4. Step 4: Simplify right side
    1,287,464.73x = 1,325,970,572,545.95
  5. Step 5: Solve for x
    x = 1,325,970,572,545.95/1,287,464.73
  6. Step 6: Final answer
    x = 1,029,908.27

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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.