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Finding the Fourth Proportional to 907,765.80, 1,361,648.70 and 671,569.80

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Solution

The fourth proportional to 907,765.80, 1,361,648.70 and 671,569.80 is: 1,007,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,765.80 : 1,361,648.70 = 671,569.80 : x
  2. Step 2: Convert to fraction form
    907,765.80/1,361,648.70 = 671,569.80/x
  3. Step 3: Cross multiply
    907,765.80x = 1,361,648.70 × 671,569.80
  4. Step 4: Simplify right side
    907,765.80x = 914,442,145,129.26
  5. Step 5: Solve for x
    x = 914,442,145,129.26/907,765.80
  6. Step 6: Final answer
    x = 1,007,354.70

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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.