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Finding the Fourth Proportional to 555,657.68, 766,811.28 and 301,008.72

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Solution

The fourth proportional to 555,657.68, 766,811.28 and 301,008.72 is: 415,394.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,657.68 : 766,811.28 = 301,008.72 : x
  2. Step 2: Convert to fraction form
    555,657.68/766,811.28 = 301,008.72/x
  3. Step 3: Cross multiply
    555,657.68x = 766,811.28 × 301,008.72
  4. Step 4: Simplify right side
    555,657.68x = 230,816,881,874.36
  5. Step 5: Solve for x
    x = 230,816,881,874.36/555,657.68
  6. Step 6: Final answer
    x = 415,394.03

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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.