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Finding the Fourth Proportional to 854,460.40, 1,281,690.60 and 818,057.20

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Solution

The fourth proportional to 854,460.40, 1,281,690.60 and 818,057.20 is: 1,227,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,460.40 : 1,281,690.60 = 818,057.20 : x
  2. Step 2: Convert to fraction form
    854,460.40/1,281,690.60 = 818,057.20/x
  3. Step 3: Cross multiply
    854,460.40x = 1,281,690.60 × 818,057.20
  4. Step 4: Simplify right side
    854,460.40x = 1,048,496,223,502.32
  5. Step 5: Solve for x
    x = 1,048,496,223,502.32/854,460.40
  6. Step 6: Final answer
    x = 1,227,085.80

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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.