Home / 1,287,468.17-1,931,202.26-686,608.95

Finding the Fourth Proportional to 1,287,468.17, 1,931,202.26 and 686,608.95

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Solution

The fourth proportional to 1,287,468.17, 1,931,202.26 and 686,608.95 is: 1,029,913.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,468.17 : 1,931,202.26 = 686,608.95 : x
  2. Step 2: Convert to fraction form
    1,287,468.17/1,931,202.26 = 686,608.95/x
  3. Step 3: Cross multiply
    1,287,468.17x = 1,931,202.26 × 686,608.95
  4. Step 4: Simplify right side
    1,287,468.17x = 1,325,980,752,543.18
  5. Step 5: Solve for x
    x = 1,325,980,752,543.18/1,287,468.17
  6. Step 6: Final answer
    x = 1,029,913.43

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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.