Home / 939,655.50-1,296,725.51-509,935.73

Finding the Fourth Proportional to 939,655.50, 1,296,725.51 and 509,935.73

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Solution

The fourth proportional to 939,655.50, 1,296,725.51 and 509,935.73 is: 703,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,655.50 : 1,296,725.51 = 509,935.73 : x
  2. Step 2: Convert to fraction form
    939,655.50/1,296,725.51 = 509,935.73/x
  3. Step 3: Cross multiply
    939,655.50x = 1,296,725.51 × 509,935.73
  4. Step 4: Simplify right side
    939,655.50x = 661,246,660,518.17
  5. Step 5: Solve for x
    x = 661,246,660,518.17/939,655.50
  6. Step 6: Final answer
    x = 703,711.80

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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.