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Finding the Fourth Proportional to 571,820.23, 789,106.21 and 317,164.87

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Solution

The fourth proportional to 571,820.23, 789,106.21 and 317,164.87 is: 437,684.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,820.23 : 789,106.21 = 317,164.87 : x
  2. Step 2: Convert to fraction form
    571,820.23/789,106.21 = 317,164.87/x
  3. Step 3: Cross multiply
    571,820.23x = 789,106.21 × 317,164.87
  4. Step 4: Simplify right side
    571,820.23x = 250,276,768,510.84
  5. Step 5: Solve for x
    x = 250,276,768,510.84/571,820.23
  6. Step 6: Final answer
    x = 437,684.35

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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.