Home / 709,480.19-979,105.56-403,548.70

Finding the Fourth Proportional to 709,480.19, 979,105.56 and 403,548.70

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Solution

The fourth proportional to 709,480.19, 979,105.56 and 403,548.70 is: 556,910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,480.19 : 979,105.56 = 403,548.70 : x
  2. Step 2: Convert to fraction form
    709,480.19/979,105.56 = 403,548.70/x
  3. Step 3: Cross multiply
    709,480.19x = 979,105.56 × 403,548.70
  4. Step 4: Simplify right side
    709,480.19x = 395,116,771,005.24
  5. Step 5: Solve for x
    x = 395,116,771,005.24/709,480.19
  6. Step 6: Final answer
    x = 556,910.23

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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.