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Finding the Fourth Proportional to 610,685.63, 842,759.70 and 338,744.69

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Solution

The fourth proportional to 610,685.63, 842,759.70 and 338,744.69 is: 467,475.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,685.63 : 842,759.70 = 338,744.69 : x
  2. Step 2: Convert to fraction form
    610,685.63/842,759.70 = 338,744.69/x
  3. Step 3: Cross multiply
    610,685.63x = 842,759.70 × 338,744.69
  4. Step 4: Simplify right side
    610,685.63x = 285,480,373,320.99
  5. Step 5: Solve for x
    x = 285,480,373,320.99/610,685.63
  6. Step 6: Final answer
    x = 467,475.18

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1.5x scale

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.