Home / 709,868.17-979,610.61-387,577.27

Finding the Fourth Proportional to 709,868.17, 979,610.61 and 387,577.27

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Solution

The fourth proportional to 709,868.17, 979,610.61 and 387,577.27 is: 534,852.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,868.17 : 979,610.61 = 387,577.27 : x
  2. Step 2: Convert to fraction form
    709,868.17/979,610.61 = 387,577.27/x
  3. Step 3: Cross multiply
    709,868.17x = 979,610.61 × 387,577.27
  4. Step 4: Simplify right side
    709,868.17x = 379,674,805,886.84
  5. Step 5: Solve for x
    x = 379,674,805,886.84/709,868.17
  6. Step 6: Final answer
    x = 534,852.56

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1.5x scale

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.