Home / 709,829.15-979,567.55-387,546.62

Finding the Fourth Proportional to 709,829.15, 979,567.55 and 387,546.62

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Solution

The fourth proportional to 709,829.15, 979,567.55 and 387,546.62 is: 534,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,829.15 : 979,567.55 = 387,546.62 : x
  2. Step 2: Convert to fraction form
    709,829.15/979,567.55 = 387,546.62/x
  3. Step 3: Cross multiply
    709,829.15x = 979,567.55 × 387,546.62
  4. Step 4: Simplify right side
    709,829.15x = 379,628,095,028.67
  5. Step 5: Solve for x
    x = 379,628,095,028.67/709,829.15
  6. Step 6: Final answer
    x = 534,816.15

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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.