Home / 709,816.17-979,561.17-387,539.85

Finding the Fourth Proportional to 709,816.17, 979,561.17 and 387,539.85

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Solution

The fourth proportional to 709,816.17, 979,561.17 and 387,539.85 is: 534,813.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,816.17 : 979,561.17 = 387,539.85 : x
  2. Step 2: Convert to fraction form
    709,816.17/979,561.17 = 387,539.85/x
  3. Step 3: Cross multiply
    709,816.17x = 979,561.17 × 387,539.85
  4. Step 4: Simplify right side
    709,816.17x = 379,618,988,887.63
  5. Step 5: Solve for x
    x = 379,618,988,887.63/709,816.17
  6. Step 6: Final answer
    x = 534,813.10

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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.