Home / 1,207,977.54-1,666,966.56-664,109.40

Finding the Fourth Proportional to 1,207,977.54, 1,666,966.56 and 664,109.40

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Solution

The fourth proportional to 1,207,977.54, 1,666,966.56 and 664,109.40 is: 916,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,977.54 : 1,666,966.56 = 664,109.40 : x
  2. Step 2: Convert to fraction form
    1,207,977.54/1,666,966.56 = 664,109.40/x
  3. Step 3: Cross multiply
    1,207,977.54x = 1,666,966.56 × 664,109.40
  4. Step 4: Simplify right side
    1,207,977.54x = 1,107,048,161,981.66
  5. Step 5: Solve for x
    x = 1,107,048,161,981.66/1,207,977.54
  6. Step 6: Final answer
    x = 916,447.64

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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.