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Finding the Fourth Proportional to 555,147.60, 766,103.47 and 300,498.78

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Solution

The fourth proportional to 555,147.60, 766,103.47 and 300,498.78 is: 414,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,147.60 : 766,103.47 = 300,498.78 : x
  2. Step 2: Convert to fraction form
    555,147.60/766,103.47 = 300,498.78/x
  3. Step 3: Cross multiply
    555,147.60x = 766,103.47 × 300,498.78
  4. Step 4: Simplify right side
    555,147.60x = 230,213,158,088.77
  5. Step 5: Solve for x
    x = 230,213,158,088.77/555,147.60
  6. Step 6: Final answer
    x = 414,688.20

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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.