Home / 1,287,465.73-1,931,198.59-686,606.52

Finding the Fourth Proportional to 1,287,465.73, 1,931,198.59 and 686,606.52

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Solution

The fourth proportional to 1,287,465.73, 1,931,198.59 and 686,606.52 is: 1,029,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,465.73 : 1,931,198.59 = 686,606.52 : x
  2. Step 2: Convert to fraction form
    1,287,465.73/1,931,198.59 = 686,606.52/x
  3. Step 3: Cross multiply
    1,287,465.73x = 1,931,198.59 × 686,606.52
  4. Step 4: Simplify right side
    1,287,465.73x = 1,325,973,543,308.81
  5. Step 5: Solve for x
    x = 1,325,973,543,308.81/1,287,465.73
  6. Step 6: Final answer
    x = 1,029,909.78

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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.