Home / 1,312,914.78-1,811,822.40-709,302.78

Finding the Fourth Proportional to 1,312,914.78, 1,811,822.40 and 709,302.78

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Solution

The fourth proportional to 1,312,914.78, 1,811,822.40 and 709,302.78 is: 978,837.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,914.78 : 1,811,822.40 = 709,302.78 : x
  2. Step 2: Convert to fraction form
    1,312,914.78/1,811,822.40 = 709,302.78/x
  3. Step 3: Cross multiply
    1,312,914.78x = 1,811,822.40 × 709,302.78
  4. Step 4: Simplify right side
    1,312,914.78x = 1,285,130,665,186.27
  5. Step 5: Solve for x
    x = 1,285,130,665,186.27/1,312,914.78
  6. Step 6: Final answer
    x = 978,837.84

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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.