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Finding the Fourth Proportional to 872,510, 1,308,781.40 and 273,457.92

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Solution

The fourth proportional to 872,510, 1,308,781.40 and 273,457.92 is: 410,192.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,510 : 1,308,781.40 = 273,457.92 : x
  2. Step 2: Convert to fraction form
    872,510/1,308,781.40 = 273,457.92/x
  3. Step 3: Cross multiply
    872,510x = 1,308,781.40 × 273,457.92
  4. Step 4: Simplify right side
    872,510x = 357,896,639,378.69
  5. Step 5: Solve for x
    x = 357,896,639,378.69/872,510
  6. Step 6: Final answer
    x = 410,192.02

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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.