Home / 709,784.77-979,588.94-403,935.56

Finding the Fourth Proportional to 709,784.77, 979,588.94 and 403,935.56

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Solution

The fourth proportional to 709,784.77, 979,588.94 and 403,935.56 is: 557,479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,784.77 : 979,588.94 = 403,935.56 : x
  2. Step 2: Convert to fraction form
    709,784.77/979,588.94 = 403,935.56/x
  3. Step 3: Cross multiply
    709,784.77x = 979,588.94 × 403,935.56
  4. Step 4: Simplify right side
    709,784.77x = 395,690,807,048.71
  5. Step 5: Solve for x
    x = 395,690,807,048.71/709,784.77
  6. Step 6: Final answer
    x = 557,479.99

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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.