Home / 690,221,984.04-952,529,842.50-408,206,174.40

Finding the Fourth Proportional to 690,221,984.04, 952,529,842.50 and 408,206,174.40

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Solution

The fourth proportional to 690,221,984.04, 952,529,842.50 and 408,206,174.40 is: 563,338,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,221,984.04 : 952,529,842.50 = 408,206,174.40 : x
  2. Step 2: Convert to fraction form
    690,221,984.04/952,529,842.50 = 408,206,174.40/x
  3. Step 3: Cross multiply
    690,221,984.04x = 952,529,842.50 × 408,206,174.40
  4. Step 4: Simplify right side
    690,221,984.04x = 388,828,563,008,759,488
  5. Step 5: Solve for x
    x = 388,828,563,008,759,488/690,221,984.04
  6. Step 6: Final answer
    x = 563,338,421.55

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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.