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Finding the Fourth Proportional to 618,405.44, 931,820.63 and 508,546.35

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Solution

The fourth proportional to 618,405.44, 931,820.63 and 508,546.35 is: 766,283.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,405.44 : 931,820.63 = 508,546.35 : x
  2. Step 2: Convert to fraction form
    618,405.44/931,820.63 = 508,546.35/x
  3. Step 3: Cross multiply
    618,405.44x = 931,820.63 × 508,546.35
  4. Step 4: Simplify right side
    618,405.44x = 473,873,977,698.47
  5. Step 5: Solve for x
    x = 473,873,977,698.47/618,405.44
  6. Step 6: Final answer
    x = 766,283.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.