Home / 1,209,006.12-1,668,425.94-665,140.60

Finding the Fourth Proportional to 1,209,006.12, 1,668,425.94 and 665,140.60

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Solution

The fourth proportional to 1,209,006.12, 1,668,425.94 and 665,140.60 is: 917,892.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,006.12 : 1,668,425.94 = 665,140.60 : x
  2. Step 2: Convert to fraction form
    1,209,006.12/1,668,425.94 = 665,140.60/x
  3. Step 3: Cross multiply
    1,209,006.12x = 1,668,425.94 × 665,140.60
  4. Step 4: Simplify right side
    1,209,006.12x = 1,109,737,830,787.16
  5. Step 5: Solve for x
    x = 1,109,737,830,787.16/1,209,006.12
  6. Step 6: Final answer
    x = 917,892.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.