Home / 714,977.12-986,665.05-388,287.84

Finding the Fourth Proportional to 714,977.12, 986,665.05 and 388,287.84

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Solution

The fourth proportional to 714,977.12, 986,665.05 and 388,287.84 is: 535,835.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,977.12 : 986,665.05 = 388,287.84 : x
  2. Step 2: Convert to fraction form
    714,977.12/986,665.05 = 388,287.84/x
  3. Step 3: Cross multiply
    714,977.12x = 986,665.05 × 388,287.84
  4. Step 4: Simplify right side
    714,977.12x = 383,110,040,605.49
  5. Step 5: Solve for x
    x = 383,110,040,605.49/714,977.12
  6. Step 6: Final answer
    x = 535,835.39

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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.