Home / 677,815,338.06-935,333,832.75-380,400,139.70

Finding the Fourth Proportional to 677,815,338.06, 935,333,832.75 and 380,400,139.70

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Solution

The fourth proportional to 677,815,338.06, 935,333,832.75 and 380,400,139.70 is: 524,923,383.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,815,338.06 : 935,333,832.75 = 380,400,139.70 : x
  2. Step 2: Convert to fraction form
    677,815,338.06/935,333,832.75 = 380,400,139.70/x
  3. Step 3: Cross multiply
    677,815,338.06x = 935,333,832.75 × 380,400,139.70
  4. Step 4: Simplify right side
    677,815,338.06x = 355,801,120,639,559,744
  5. Step 5: Solve for x
    x = 355,801,120,639,559,744/677,815,338.06
  6. Step 6: Final answer
    x = 524,923,383.50

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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.