Home / 1,312,621-1,811,417.70-709,009

Finding the Fourth Proportional to 1,312,621, 1,811,417.70 and 709,009

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Solution

The fourth proportional to 1,312,621, 1,811,417.70 and 709,009 is: 978,432.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,621 : 1,811,417.70 = 709,009 : x
  2. Step 2: Convert to fraction form
    1,312,621/1,811,417.70 = 709,009/x
  3. Step 3: Cross multiply
    1,312,621x = 1,811,417.70 × 709,009
  4. Step 4: Simplify right side
    1,312,621x = 1,284,311,452,059.30
  5. Step 5: Solve for x
    x = 1,284,311,452,059.30/1,312,621
  6. Step 6: Final answer
    x = 978,432.81

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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.