Home / 1,388,840.94-1,916,655-815,876.10

Finding the Fourth Proportional to 1,388,840.94, 1,916,655 and 815,876.10

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Solution

The fourth proportional to 1,388,840.94, 1,916,655 and 815,876.10 is: 1,125,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,840.94 : 1,916,655 = 815,876.10 : x
  2. Step 2: Convert to fraction form
    1,388,840.94/1,916,655 = 815,876.10/x
  3. Step 3: Cross multiply
    1,388,840.94x = 1,916,655 × 815,876.10
  4. Step 4: Simplify right side
    1,388,840.94x = 1,563,753,006,445.50
  5. Step 5: Solve for x
    x = 1,563,753,006,445.50/1,388,840.94
  6. Step 6: Final answer
    x = 1,125,941.04

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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.