Home / 1,008,907.47-1,391,504.67-646,364.88

Finding the Fourth Proportional to 1,008,907.47, 1,391,504.67 and 646,364.88

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Solution

The fourth proportional to 1,008,907.47, 1,391,504.67 and 646,364.88 is: 891,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,907.47 : 1,391,504.67 = 646,364.88 : x
  2. Step 2: Convert to fraction form
    1,008,907.47/1,391,504.67 = 646,364.88/x
  3. Step 3: Cross multiply
    1,008,907.47x = 1,391,504.67 × 646,364.88
  4. Step 4: Simplify right side
    1,008,907.47x = 899,419,749,043.99
  5. Step 5: Solve for x
    x = 899,419,749,043.99/1,008,907.47
  6. Step 6: Final answer
    x = 891,478.93

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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.