Home / 690,221,898.67-952,529,724.97-408,206,089.01

Finding the Fourth Proportional to 690,221,898.67, 952,529,724.97 and 408,206,089.01

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Solution

The fourth proportional to 690,221,898.67, 952,529,724.97 and 408,206,089.01 is: 563,338,303.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,221,898.67 : 952,529,724.97 = 408,206,089.01 : x
  2. Step 2: Convert to fraction form
    690,221,898.67/952,529,724.97 = 408,206,089.01/x
  3. Step 3: Cross multiply
    690,221,898.67x = 952,529,724.97 × 408,206,089.01
  4. Step 4: Simplify right side
    690,221,898.67x = 388,828,433,691,011,968
  5. Step 5: Solve for x
    x = 388,828,433,691,011,968/690,221,898.67
  6. Step 6: Final answer
    x = 563,338,303.87

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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.