Home / 677,815,343.45-935,333,840.16-380,400,145.07

Finding the Fourth Proportional to 677,815,343.45, 935,333,840.16 and 380,400,145.07

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Solution

The fourth proportional to 677,815,343.45, 935,333,840.16 and 380,400,145.07 is: 524,923,390.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,815,343.45 : 935,333,840.16 = 380,400,145.07 : x
  2. Step 2: Convert to fraction form
    677,815,343.45/935,333,840.16 = 380,400,145.07/x
  3. Step 3: Cross multiply
    677,815,343.45x = 935,333,840.16 × 380,400,145.07
  4. Step 4: Simplify right side
    677,815,343.45x = 355,801,128,485,744,192
  5. Step 5: Solve for x
    x = 355,801,128,485,744,192/677,815,343.45
  6. Step 6: Final answer
    x = 524,923,390.90

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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.