Home / 560,143.76-772,974.97-305,479.76

Finding the Fourth Proportional to 560,143.76, 772,974.97 and 305,479.76

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Solution

The fourth proportional to 560,143.76, 772,974.97 and 305,479.76 is: 421,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,143.76 : 772,974.97 = 305,479.76 : x
  2. Step 2: Convert to fraction form
    560,143.76/772,974.97 = 305,479.76/x
  3. Step 3: Cross multiply
    560,143.76x = 772,974.97 × 305,479.76
  4. Step 4: Simplify right side
    560,143.76x = 236,128,203,693.03
  5. Step 5: Solve for x
    x = 236,128,203,693.03/560,143.76
  6. Step 6: Final answer
    x = 421,549.29

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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.