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Finding the Fourth Proportional to 560,031.58, 772,842.12 and 305,382.76

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Solution

The fourth proportional to 560,031.58, 772,842.12 and 305,382.76 is: 421,427.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,031.58 : 772,842.12 = 305,382.76 : x
  2. Step 2: Convert to fraction form
    560,031.58/772,842.12 = 305,382.76/x
  3. Step 3: Cross multiply
    560,031.58x = 772,842.12 × 305,382.76
  4. Step 4: Simplify right side
    560,031.58x = 236,012,659,649.85
  5. Step 5: Solve for x
    x = 236,012,659,649.85/560,031.58
  6. Step 6: Final answer
    x = 421,427.41

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Similar ratio
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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.