Home / 709,849.08-979,553.52-387,554.40

Finding the Fourth Proportional to 709,849.08, 979,553.52 and 387,554.40

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Solution

The fourth proportional to 709,849.08, 979,553.52 and 387,554.40 is: 534,804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,849.08 : 979,553.52 = 387,554.40 : x
  2. Step 2: Convert to fraction form
    709,849.08/979,553.52 = 387,554.40/x
  3. Step 3: Cross multiply
    709,849.08x = 979,553.52 × 387,554.40
  4. Step 4: Simplify right side
    709,849.08x = 379,630,276,711.49
  5. Step 5: Solve for x
    x = 379,630,276,711.49/709,849.08
  6. Step 6: Final answer
    x = 534,804.21

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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.