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Finding the Fourth Proportional to 854,562.60, 1,281,843.90 and 553,412.70

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Solution

The fourth proportional to 854,562.60, 1,281,843.90 and 553,412.70 is: 830,119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,562.60 : 1,281,843.90 = 553,412.70 : x
  2. Step 2: Convert to fraction form
    854,562.60/1,281,843.90 = 553,412.70/x
  3. Step 3: Cross multiply
    854,562.60x = 1,281,843.90 × 553,412.70
  4. Step 4: Simplify right side
    854,562.60x = 709,388,693,677.53
  5. Step 5: Solve for x
    x = 709,388,693,677.53/854,562.60
  6. Step 6: Final answer
    x = 830,119.05

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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.