Home / 1,043,999.30-1,565,998.95-643,340.90

Finding the Fourth Proportional to 1,043,999.30, 1,565,998.95 and 643,340.90

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Solution

The fourth proportional to 1,043,999.30, 1,565,998.95 and 643,340.90 is: 965,011.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043,999.30 : 1,565,998.95 = 643,340.90 : x
  2. Step 2: Convert to fraction form
    1,043,999.30/1,565,998.95 = 643,340.90/x
  3. Step 3: Cross multiply
    1,043,999.30x = 1,565,998.95 × 643,340.90
  4. Step 4: Simplify right side
    1,043,999.30x = 1,007,471,173,892.06
  5. Step 5: Solve for x
    x = 1,007,471,173,892.06/1,043,999.30
  6. Step 6: Final answer
    x = 965,011.35

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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.