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Finding the Fourth Proportional to 1,566,310.40, 2,347,622.40 and 817,971.20

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Solution

The fourth proportional to 1,566,310.40, 2,347,622.40 and 817,971.20 is: 1,225,994.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566,310.40 : 2,347,622.40 = 817,971.20 : x
  2. Step 2: Convert to fraction form
    1,566,310.40/2,347,622.40 = 817,971.20/x
  3. Step 3: Cross multiply
    1,566,310.40x = 2,347,622.40 × 817,971.20
  4. Step 4: Simplify right side
    1,566,310.40x = 1,920,287,511,674.88
  5. Step 5: Solve for x
    x = 1,920,287,511,674.88/1,566,310.40
  6. Step 6: Final answer
    x = 1,225,994.23

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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.