Home / 841,761.11-1,263,139.52-309,655.51

Finding the Fourth Proportional to 841,761.11, 1,263,139.52 and 309,655.51

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Solution

The fourth proportional to 841,761.11, 1,263,139.52 and 309,655.51 is: 464,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,761.11 : 1,263,139.52 = 309,655.51 : x
  2. Step 2: Convert to fraction form
    841,761.11/1,263,139.52 = 309,655.51/x
  3. Step 3: Cross multiply
    841,761.11x = 1,263,139.52 × 309,655.51
  4. Step 4: Simplify right side
    841,761.11x = 391,138,107,560.63
  5. Step 5: Solve for x
    x = 391,138,107,560.63/841,761.11
  6. Step 6: Final answer
    x = 464,666.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.