Home / 1,312,880-1,811,774.40-709,268

Finding the Fourth Proportional to 1,312,880, 1,811,774.40 and 709,268

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Solution

The fourth proportional to 1,312,880, 1,811,774.40 and 709,268 is: 978,789.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,880 : 1,811,774.40 = 709,268 : x
  2. Step 2: Convert to fraction form
    1,312,880/1,811,774.40 = 709,268/x
  3. Step 3: Cross multiply
    1,312,880x = 1,811,774.40 × 709,268
  4. Step 4: Simplify right side
    1,312,880x = 1,285,033,605,139.20
  5. Step 5: Solve for x
    x = 1,285,033,605,139.20/1,312,880
  6. Step 6: Final answer
    x = 978,789.84

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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.