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Finding the Fourth Proportional to 555,657.56, 766,806.74 and 301,009.80

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Solution

The fourth proportional to 555,657.56, 766,806.74 and 301,009.80 is: 415,393.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,657.56 : 766,806.74 = 301,009.80 : x
  2. Step 2: Convert to fraction form
    555,657.56/766,806.74 = 301,009.80/x
  3. Step 3: Cross multiply
    555,657.56x = 766,806.74 × 301,009.80
  4. Step 4: Simplify right side
    555,657.56x = 230,816,343,446.05
  5. Step 5: Solve for x
    x = 230,816,343,446.05/555,657.56
  6. Step 6: Final answer
    x = 415,393.15

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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.