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Finding the Fourth Proportional to 555,471.64, 766,564.90 and 340,730.12

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Solution

The fourth proportional to 555,471.64, 766,564.90 and 340,730.12 is: 470,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,471.64 : 766,564.90 = 340,730.12 : x
  2. Step 2: Convert to fraction form
    555,471.64/766,564.90 = 340,730.12/x
  3. Step 3: Cross multiply
    555,471.64x = 766,564.90 × 340,730.12
  4. Step 4: Simplify right side
    555,471.64x = 261,191,750,364.79
  5. Step 5: Solve for x
    x = 261,191,750,364.79/555,471.64
  6. Step 6: Final answer
    x = 470,216.18

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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.