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Finding the Fourth Proportional to 907,630.65, 1,361,445.98 and 809,653.05

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Solution

The fourth proportional to 907,630.65, 1,361,445.98 and 809,653.05 is: 1,214,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,630.65 : 1,361,445.98 = 809,653.05 : x
  2. Step 2: Convert to fraction form
    907,630.65/1,361,445.98 = 809,653.05/x
  3. Step 3: Cross multiply
    907,630.65x = 1,361,445.98 × 809,653.05
  4. Step 4: Simplify right side
    907,630.65x = 1,102,298,886,068.97
  5. Step 5: Solve for x
    x = 1,102,298,886,068.97/907,630.65
  6. Step 6: Final answer
    x = 1,214,479.58

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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.