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Finding the Fourth Proportional to 555,090.42, 766,038.72 and 340,348.86

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Solution

The fourth proportional to 555,090.42, 766,038.72 and 340,348.86 is: 469,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,090.42 : 766,038.72 = 340,348.86 : x
  2. Step 2: Convert to fraction form
    555,090.42/766,038.72 = 340,348.86/x
  3. Step 3: Cross multiply
    555,090.42x = 766,038.72 × 340,348.86
  4. Step 4: Simplify right side
    555,090.42x = 260,720,405,067.86
  5. Step 5: Solve for x
    x = 260,720,405,067.86/555,090.42
  6. Step 6: Final answer
    x = 469,689.97

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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.