Home / 716,049.15-987,905.96-405,918.46

Finding the Fourth Proportional to 716,049.15, 987,905.96 and 405,918.46

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Solution

The fourth proportional to 716,049.15, 987,905.96 and 405,918.46 is: 560,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,049.15 : 987,905.96 = 405,918.46 : x
  2. Step 2: Convert to fraction form
    716,049.15/987,905.96 = 405,918.46/x
  3. Step 3: Cross multiply
    716,049.15x = 987,905.96 × 405,918.46
  4. Step 4: Simplify right side
    716,049.15x = 401,009,271,411.87
  5. Step 5: Solve for x
    x = 401,009,271,411.87/716,049.15
  6. Step 6: Final answer
    x = 560,030.37

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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.