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Finding the Fourth Proportional to 907,628.55, 1,361,442.83 and 781,657.35

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Solution

The fourth proportional to 907,628.55, 1,361,442.83 and 781,657.35 is: 1,172,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,628.55 : 1,361,442.83 = 781,657.35 : x
  2. Step 2: Convert to fraction form
    907,628.55/1,361,442.83 = 781,657.35/x
  3. Step 3: Cross multiply
    907,628.55x = 1,361,442.83 × 781,657.35
  4. Step 4: Simplify right side
    907,628.55x = 1,064,181,790,766.01
  5. Step 5: Solve for x
    x = 1,064,181,790,766.01/907,628.55
  6. Step 6: Final answer
    x = 1,172,486.03

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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.