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Finding the Fourth Proportional to 841,871.51, 1,262,818.20 and 280,906.01

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Solution

The fourth proportional to 841,871.51, 1,262,818.20 and 280,906.01 is: 421,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,871.51 : 1,262,818.20 = 280,906.01 : x
  2. Step 2: Convert to fraction form
    841,871.51/1,262,818.20 = 280,906.01/x
  3. Step 3: Cross multiply
    841,871.51x = 1,262,818.20 × 280,906.01
  4. Step 4: Simplify right side
    841,871.51x = 354,733,221,917.38
  5. Step 5: Solve for x
    x = 354,733,221,917.38/841,871.51
  6. Step 6: Final answer
    x = 421,362.66

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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.