Home / 515,441,328.30-711,317,594.43-280,501,891.02

Finding the Fourth Proportional to 515,441,328.30, 711,317,594.43 and 280,501,891.02

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Solution

The fourth proportional to 515,441,328.30, 711,317,594.43 and 280,501,891.02 is: 387,097,268.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,441,328.30 : 711,317,594.43 = 280,501,891.02 : x
  2. Step 2: Convert to fraction form
    515,441,328.30/711,317,594.43 = 280,501,891.02/x
  3. Step 3: Cross multiply
    515,441,328.30x = 711,317,594.43 × 280,501,891.02
  4. Step 4: Simplify right side
    515,441,328.30x = 199,525,930,353,412,384
  5. Step 5: Solve for x
    x = 199,525,930,353,412,384/515,441,328.30
  6. Step 6: Final answer
    x = 387,097,268.69

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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.