Home / 555,361,881-766,382,802.78-304,457,693.64

Finding the Fourth Proportional to 555,361,881, 766,382,802.78 and 304,457,693.64

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Solution

The fourth proportional to 555,361,881, 766,382,802.78 and 304,457,693.64 is: 420,142,520.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,361,881 : 766,382,802.78 = 304,457,693.64 : x
  2. Step 2: Convert to fraction form
    555,361,881/766,382,802.78 = 304,457,693.64/x
  3. Step 3: Cross multiply
    555,361,881x = 766,382,802.78 × 304,457,693.64
  4. Step 4: Simplify right side
    555,361,881x = 233,331,140,579,757,760
  5. Step 5: Solve for x
    x = 233,331,140,579,757,760/555,361,881
  6. Step 6: Final answer
    x = 420,142,520.69

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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.