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Finding the Fourth Proportional to 760,571.76, 1,141,010 and 280,802.56

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Solution

The fourth proportional to 760,571.76, 1,141,010 and 280,802.56 is: 421,260.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,571.76 : 1,141,010 = 280,802.56 : x
  2. Step 2: Convert to fraction form
    760,571.76/1,141,010 = 280,802.56/x
  3. Step 3: Cross multiply
    760,571.76x = 1,141,010 × 280,802.56
  4. Step 4: Simplify right side
    760,571.76x = 320,398,528,985.60
  5. Step 5: Solve for x
    x = 320,398,528,985.60/760,571.76
  6. Step 6: Final answer
    x = 421,260.09

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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.