Home / 751,806,901.25-1,128,817,365.92-420,463,089.17

Finding the Fourth Proportional to 751,806,901.25, 1,128,817,365.92 and 420,463,089.17

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Solution

The fourth proportional to 751,806,901.25, 1,128,817,365.92 and 420,463,089.17 is: 631,313,753.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,806,901.25 : 1,128,817,365.92 = 420,463,089.17 : x
  2. Step 2: Convert to fraction form
    751,806,901.25/1,128,817,365.92 = 420,463,089.17/x
  3. Step 3: Cross multiply
    751,806,901.25x = 1,128,817,365.92 × 420,463,089.17
  4. Step 4: Simplify right side
    751,806,901.25x = 474,626,036,781,363,136
  5. Step 5: Solve for x
    x = 474,626,036,781,363,136/751,806,901.25
  6. Step 6: Final answer
    x = 631,313,753.56

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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.