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Finding the Fourth Proportional to 10,400,612.80, 15,594,698.40 and 5,361,764.80

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Solution

The fourth proportional to 10,400,612.80, 15,594,698.40 and 5,361,764.80 is: 8,039,440.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,400,612.80 : 15,594,698.40 = 5,361,764.80 : x
  2. Step 2: Convert to fraction form
    10,400,612.80/15,594,698.40 = 5,361,764.80/x
  3. Step 3: Cross multiply
    10,400,612.80x = 15,594,698.40 × 5,361,764.80
  4. Step 4: Simplify right side
    10,400,612.80x = 83,615,104,947,736.31
  5. Step 5: Solve for x
    x = 83,615,104,947,736.31/10,400,612.80
  6. Step 6: Final answer
    x = 8,039,440.23

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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.