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Finding the Fourth Proportional to 907,648.10, 1,360,770.86 and 458,137.60

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Solution

The fourth proportional to 907,648.10, 1,360,770.86 and 458,137.60 is: 686,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,648.10 : 1,360,770.86 = 458,137.60 : x
  2. Step 2: Convert to fraction form
    907,648.10/1,360,770.86 = 458,137.60/x
  3. Step 3: Cross multiply
    907,648.10x = 1,360,770.86 × 458,137.60
  4. Step 4: Simplify right side
    907,648.10x = 623,420,295,950.34
  5. Step 5: Solve for x
    x = 623,420,295,950.34/907,648.10
  6. Step 6: Final answer
    x = 686,852.42

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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.