Home / 566,634.39-781,953.65-311,985.57

Finding the Fourth Proportional to 566,634.39, 781,953.65 and 311,985.57

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Solution

The fourth proportional to 566,634.39, 781,953.65 and 311,985.57 is: 430,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,634.39 : 781,953.65 = 311,985.57 : x
  2. Step 2: Convert to fraction form
    566,634.39/781,953.65 = 311,985.57/x
  3. Step 3: Cross multiply
    566,634.39x = 781,953.65 × 311,985.57
  4. Step 4: Simplify right side
    566,634.39x = 243,958,257,751.18
  5. Step 5: Solve for x
    x = 243,958,257,751.18/566,634.39
  6. Step 6: Final answer
    x = 430,539.10

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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.