Home / 939,658.13-1,296,729.12-509,938.35

Finding the Fourth Proportional to 939,658.13, 1,296,729.12 and 509,938.35

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Solution

The fourth proportional to 939,658.13, 1,296,729.12 and 509,938.35 is: 703,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,658.13 : 1,296,729.12 = 509,938.35 : x
  2. Step 2: Convert to fraction form
    939,658.13/1,296,729.12 = 509,938.35/x
  3. Step 3: Cross multiply
    939,658.13x = 1,296,729.12 × 509,938.35
  4. Step 4: Simplify right side
    939,658.13x = 661,251,907,849.75
  5. Step 5: Solve for x
    x = 661,251,907,849.75/939,658.13
  6. Step 6: Final answer
    x = 703,715.42

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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.