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Finding the Fourth Proportional to 1,566,314.40, 2,347,628.40 and 817,975.20

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Solution

The fourth proportional to 1,566,314.40, 2,347,628.40 and 817,975.20 is: 1,226,000.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566,314.40 : 2,347,628.40 = 817,975.20 : x
  2. Step 2: Convert to fraction form
    1,566,314.40/2,347,628.40 = 817,975.20/x
  3. Step 3: Cross multiply
    1,566,314.40x = 2,347,628.40 × 817,975.20
  4. Step 4: Simplify right side
    1,566,314.40x = 1,920,301,810,015.68
  5. Step 5: Solve for x
    x = 1,920,301,810,015.68/1,566,314.40
  6. Step 6: Final answer
    x = 1,226,000.23

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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.