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Finding the Fourth Proportional to 1,566,303.40, 2,347,611.90 and 817,964.20

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Solution

The fourth proportional to 1,566,303.40, 2,347,611.90 and 817,964.20 is: 1,225,983.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566,303.40 : 2,347,611.90 = 817,964.20 : x
  2. Step 2: Convert to fraction form
    1,566,303.40/2,347,611.90 = 817,964.20/x
  3. Step 3: Cross multiply
    1,566,303.40x = 2,347,611.90 × 817,964.20
  4. Step 4: Simplify right side
    1,566,303.40x = 1,920,262,489,693.98
  5. Step 5: Solve for x
    x = 1,920,262,489,693.98/1,566,303.40
  6. Step 6: Final answer
    x = 1,225,983.73

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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.