Home / 709,931.88-979,707.20-387,635.10

Finding the Fourth Proportional to 709,931.88, 979,707.20 and 387,635.10

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Solution

The fourth proportional to 709,931.88, 979,707.20 and 387,635.10 is: 534,937.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,931.88 : 979,707.20 = 387,635.10 : x
  2. Step 2: Convert to fraction form
    709,931.88/979,707.20 = 387,635.10/x
  3. Step 3: Cross multiply
    709,931.88x = 979,707.20 × 387,635.10
  4. Step 4: Simplify right side
    709,931.88x = 379,768,896,504.54
  5. Step 5: Solve for x
    x = 379,768,896,504.54/709,931.88
  6. Step 6: Final answer
    x = 534,937.09

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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.