Home / 709,955.04-979,742.72-387,667.36

Finding the Fourth Proportional to 709,955.04, 979,742.72 and 387,667.36

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Solution

The fourth proportional to 709,955.04, 979,742.72 and 387,667.36 is: 534,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,955.04 : 979,742.72 = 387,667.36 : x
  2. Step 2: Convert to fraction form
    709,955.04/979,742.72 = 387,667.36/x
  3. Step 3: Cross multiply
    709,955.04x = 979,742.72 × 387,667.36
  4. Step 4: Simplify right side
    709,955.04x = 379,814,273,741.62
  5. Step 5: Solve for x
    x = 379,814,273,741.62/709,955.04
  6. Step 6: Final answer
    x = 534,983.56

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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.