Home / 709,849.58-979,554.21-387,554.90

Finding the Fourth Proportional to 709,849.58, 979,554.21 and 387,554.90

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Solution

The fourth proportional to 709,849.58, 979,554.21 and 387,554.90 is: 534,804.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,849.58 : 979,554.21 = 387,554.90 : x
  2. Step 2: Convert to fraction form
    709,849.58/979,554.21 = 387,554.90/x
  3. Step 3: Cross multiply
    709,849.58x = 979,554.21 × 387,554.90
  4. Step 4: Simplify right side
    709,849.58x = 379,631,033,901.13
  5. Step 5: Solve for x
    x = 379,631,033,901.13/709,849.58
  6. Step 6: Final answer
    x = 534,804.90

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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.