Home / 709,811.37-979,537.05-387,517.77

Finding the Fourth Proportional to 709,811.37, 979,537.05 and 387,517.77

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Solution

The fourth proportional to 709,811.37, 979,537.05 and 387,517.77 is: 534,773.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,811.37 : 979,537.05 = 387,517.77 : x
  2. Step 2: Convert to fraction form
    709,811.37/979,537.05 = 387,517.77/x
  3. Step 3: Cross multiply
    709,811.37x = 979,537.05 × 387,517.77
  4. Step 4: Simplify right side
    709,811.37x = 379,588,013,248.38
  5. Step 5: Solve for x
    x = 379,588,013,248.38/709,811.37
  6. Step 6: Final answer
    x = 534,773.08

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Double scale
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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.