Home / 990,815.46-1,367,333.37-538,109.70

Finding the Fourth Proportional to 990,815.46, 1,367,333.37 and 538,109.70

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Solution

The fourth proportional to 990,815.46, 1,367,333.37 and 538,109.70 is: 742,595.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,815.46 : 1,367,333.37 = 538,109.70 : x
  2. Step 2: Convert to fraction form
    990,815.46/1,367,333.37 = 538,109.70/x
  3. Step 3: Cross multiply
    990,815.46x = 1,367,333.37 × 538,109.70
  4. Step 4: Simplify right side
    990,815.46x = 735,775,349,530.69
  5. Step 5: Solve for x
    x = 735,775,349,530.69/990,815.46
  6. Step 6: Final answer
    x = 742,595.75

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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.