Home / 766,655.20-1,057,985.28-427,135.36

Finding the Fourth Proportional to 766,655.20, 1,057,985.28 and 427,135.36

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Solution

The fourth proportional to 766,655.20, 1,057,985.28 and 427,135.36 is: 589,447.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,655.20 : 1,057,985.28 = 427,135.36 : x
  2. Step 2: Convert to fraction form
    766,655.20/1,057,985.28 = 427,135.36/x
  3. Step 3: Cross multiply
    766,655.20x = 1,057,985.28 × 427,135.36
  4. Step 4: Simplify right side
    766,655.20x = 451,902,923,447.50
  5. Step 5: Solve for x
    x = 451,902,923,447.50/766,655.20
  6. Step 6: Final answer
    x = 589,447.41

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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.