Home / 709,835.13-979,595.64-387,569.73

Finding the Fourth Proportional to 709,835.13, 979,595.64 and 387,569.73

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Solution

The fourth proportional to 709,835.13, 979,595.64 and 387,569.73 is: 534,858.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,835.13 : 979,595.64 = 387,569.73 : x
  2. Step 2: Convert to fraction form
    709,835.13/979,595.64 = 387,569.73/x
  3. Step 3: Cross multiply
    709,835.13x = 979,595.64 × 387,569.73
  4. Step 4: Simplify right side
    709,835.13x = 379,661,617,703.98
  5. Step 5: Solve for x
    x = 379,661,617,703.98/709,835.13
  6. Step 6: Final answer
    x = 534,858.87

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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.