Home / 854,778.40-1,282,167.60-815,412.40

Finding the Fourth Proportional to 854,778.40, 1,282,167.60 and 815,412.40

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Solution

The fourth proportional to 854,778.40, 1,282,167.60 and 815,412.40 is: 1,223,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,778.40 : 1,282,167.60 = 815,412.40 : x
  2. Step 2: Convert to fraction form
    854,778.40/1,282,167.60 = 815,412.40/x
  3. Step 3: Cross multiply
    854,778.40x = 1,282,167.60 × 815,412.40
  4. Step 4: Simplify right side
    854,778.40x = 1,045,495,359,918.24
  5. Step 5: Solve for x
    x = 1,045,495,359,918.24/854,778.40
  6. Step 6: Final answer
    x = 1,223,118.60

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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.