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Finding the Fourth Proportional to 661,271.10, 912,563.22 and 359,471.58

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Solution

The fourth proportional to 661,271.10, 912,563.22 and 359,471.58 is: 496,075.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,271.10 : 912,563.22 = 359,471.58 : x
  2. Step 2: Convert to fraction form
    661,271.10/912,563.22 = 359,471.58/x
  3. Step 3: Cross multiply
    661,271.10x = 912,563.22 × 359,471.58
  4. Step 4: Simplify right side
    661,271.10x = 328,040,542,543.29
  5. Step 5: Solve for x
    x = 328,040,542,543.29/661,271.10
  6. Step 6: Final answer
    x = 496,075.73

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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.