Home / 280,983,794,318.25-421,425,869,784.53-127,792,802,312.75

Finding the Fourth Proportional to 280,983,794,318.25, 421,425,869,784.53 and 127,792,802,312.75

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Solution

The fourth proportional to 280,983,794,318.25, 421,425,869,784.53 and 127,792,802,312.75 is: 191,666,544,319.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,983,794,318.25 : 421,425,869,784.53 = 127,792,802,312.75 : x
  2. Step 2: Convert to fraction form
    280,983,794,318.25/421,425,869,784.53 = 127,792,802,312.75/x
  3. Step 3: Cross multiply
    280,983,794,318.25x = 421,425,869,784.53 × 127,792,802,312.75
  4. Step 4: Simplify right side
    280,983,794,318.25x = 53,855,192,866,853,165,727,744
  5. Step 5: Solve for x
    x = 53,855,192,866,853,165,727,744/280,983,794,318.25
  6. Step 6: Final answer
    x = 191,666,544,319.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.