Home / 990,869.45-1,367,406.83-538,160.45

Finding the Fourth Proportional to 990,869.45, 1,367,406.83 and 538,160.45

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Solution

The fourth proportional to 990,869.45, 1,367,406.83 and 538,160.45 is: 742,665.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,869.45 : 1,367,406.83 = 538,160.45 : x
  2. Step 2: Convert to fraction form
    990,869.45/1,367,406.83 = 538,160.45/x
  3. Step 3: Cross multiply
    990,869.45x = 1,367,406.83 × 538,160.45
  4. Step 4: Simplify right side
    990,869.45x = 735,884,269,474.24
  5. Step 5: Solve for x
    x = 735,884,269,474.24/990,869.45
  6. Step 6: Final answer
    x = 742,665.22

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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.