Home / 1,287,467.17-1,931,200.75-686,607.95

Finding the Fourth Proportional to 1,287,467.17, 1,931,200.75 and 686,607.95

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Solution

The fourth proportional to 1,287,467.17, 1,931,200.75 and 686,607.95 is: 1,029,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,467.17 : 1,931,200.75 = 686,607.95 : x
  2. Step 2: Convert to fraction form
    1,287,467.17/1,931,200.75 = 686,607.95/x
  3. Step 3: Cross multiply
    1,287,467.17x = 1,931,200.75 × 686,607.95
  4. Step 4: Simplify right side
    1,287,467.17x = 1,325,977,787,995.96
  5. Step 5: Solve for x
    x = 1,325,977,787,995.96/1,287,467.17
  6. Step 6: Final answer
    x = 1,029,911.92

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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.