Home / 709,455.38-979,069.07-387,186.08

Finding the Fourth Proportional to 709,455.38, 979,069.07 and 387,186.08

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Solution

The fourth proportional to 709,455.38, 979,069.07 and 387,186.08 is: 534,328.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,455.38 : 979,069.07 = 387,186.08 : x
  2. Step 2: Convert to fraction form
    709,455.38/979,069.07 = 387,186.08/x
  3. Step 3: Cross multiply
    709,455.38x = 979,069.07 × 387,186.08
  4. Step 4: Simplify right side
    709,455.38x = 379,081,911,335.17
  5. Step 5: Solve for x
    x = 379,081,911,335.17/709,455.38
  6. Step 6: Final answer
    x = 534,328.06

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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.