Home / 854,013.34-1,178,655.60-491,429.80

Finding the Fourth Proportional to 854,013.34, 1,178,655.60 and 491,429.80

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Solution

The fourth proportional to 854,013.34, 1,178,655.60 and 491,429.80 is: 678,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,013.34 : 1,178,655.60 = 491,429.80 : x
  2. Step 2: Convert to fraction form
    854,013.34/1,178,655.60 = 491,429.80/x
  3. Step 3: Cross multiply
    854,013.34x = 1,178,655.60 × 491,429.80
  4. Step 4: Simplify right side
    854,013.34x = 579,226,485,776.88
  5. Step 5: Solve for x
    x = 579,226,485,776.88/854,013.34
  6. Step 6: Final answer
    x = 678,240.56

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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.