Home / 1,386,139.68-1,912,156.25-877,137.30

Finding the Fourth Proportional to 1,386,139.68, 1,912,156.25 and 877,137.30

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Solution

The fourth proportional to 1,386,139.68, 1,912,156.25 and 877,137.30 is: 1,209,996.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,139.68 : 1,912,156.25 = 877,137.30 : x
  2. Step 2: Convert to fraction form
    1,386,139.68/1,912,156.25 = 877,137.30/x
  3. Step 3: Cross multiply
    1,386,139.68x = 1,912,156.25 × 877,137.30
  4. Step 4: Simplify right side
    1,386,139.68x = 1,677,223,565,917.44
  5. Step 5: Solve for x
    x = 1,677,223,565,917.44/1,386,139.68
  6. Step 6: Final answer
    x = 1,209,996.07

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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.