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Finding the Fourth Proportional to 538,509.10, 807,763.65 and 486,021.10

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Solution

The fourth proportional to 538,509.10, 807,763.65 and 486,021.10 is: 729,031.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,509.10 : 807,763.65 = 486,021.10 : x
  2. Step 2: Convert to fraction form
    538,509.10/807,763.65 = 486,021.10/x
  3. Step 3: Cross multiply
    538,509.10x = 807,763.65 × 486,021.10
  4. Step 4: Simplify right side
    538,509.10x = 392,590,177,713.02
  5. Step 5: Solve for x
    x = 392,590,177,713.02/538,509.10
  6. Step 6: Final answer
    x = 729,031.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.