Home / 691,784.49-954,660.13-385,860.63

Finding the Fourth Proportional to 691,784.49, 954,660.13 and 385,860.63

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Solution

The fourth proportional to 691,784.49, 954,660.13 and 385,860.63 is: 532,486.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,784.49 : 954,660.13 = 385,860.63 : x
  2. Step 2: Convert to fraction form
    691,784.49/954,660.13 = 385,860.63/x
  3. Step 3: Cross multiply
    691,784.49x = 954,660.13 × 385,860.63
  4. Step 4: Simplify right side
    691,784.49x = 368,365,759,197.68
  5. Step 5: Solve for x
    x = 368,365,759,197.68/691,784.49
  6. Step 6: Final answer
    x = 532,486.29

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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.