Home / 690,221,987.28-952,529,847-408,206,177.64

Finding the Fourth Proportional to 690,221,987.28, 952,529,847 and 408,206,177.64

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Solution

The fourth proportional to 690,221,987.28, 952,529,847 and 408,206,177.64 is: 563,338,426.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,221,987.28 : 952,529,847 = 408,206,177.64 : x
  2. Step 2: Convert to fraction form
    690,221,987.28/952,529,847 = 408,206,177.64/x
  3. Step 3: Cross multiply
    690,221,987.28x = 952,529,847 × 408,206,177.64
  4. Step 4: Simplify right side
    690,221,987.28x = 388,828,567,931,884,032
  5. Step 5: Solve for x
    x = 388,828,567,931,884,032/690,221,987.28
  6. Step 6: Final answer
    x = 563,338,426.04

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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.