Home / 1,006,120.47-1,388,320.22-680,142.74

Finding the Fourth Proportional to 1,006,120.47, 1,388,320.22 and 680,142.74

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Solution

The fourth proportional to 1,006,120.47, 1,388,320.22 and 680,142.74 is: 938,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,006,120.47 : 1,388,320.22 = 680,142.74 : x
  2. Step 2: Convert to fraction form
    1,006,120.47/1,388,320.22 = 680,142.74/x
  3. Step 3: Cross multiply
    1,006,120.47x = 1,388,320.22 × 680,142.74
  4. Step 4: Simplify right side
    1,006,120.47x = 944,255,920,978.74
  5. Step 5: Solve for x
    x = 944,255,920,978.74/1,006,120.47
  6. Step 6: Final answer
    x = 938,511.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.