Home / 1,386,426.70-1,912,245.33-876,637

Finding the Fourth Proportional to 1,386,426.70, 1,912,245.33 and 876,637

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Solution

The fourth proportional to 1,386,426.70, 1,912,245.33 and 876,637 is: 1,209,111.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,426.70 : 1,912,245.33 = 876,637 : x
  2. Step 2: Convert to fraction form
    1,386,426.70/1,912,245.33 = 876,637/x
  3. Step 3: Cross multiply
    1,386,426.70x = 1,912,245.33 × 876,637
  4. Step 4: Simplify right side
    1,386,426.70x = 1,676,345,009,355.21
  5. Step 5: Solve for x
    x = 1,676,345,009,355.21/1,386,426.70
  6. Step 6: Final answer
    x = 1,209,111.89

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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.