Home / 1,209,145.10-1,668,585.82-665,281.26

Finding the Fourth Proportional to 1,209,145.10, 1,668,585.82 and 665,281.26

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Solution

The fourth proportional to 1,209,145.10, 1,668,585.82 and 665,281.26 is: 918,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,145.10 : 1,668,585.82 = 665,281.26 : x
  2. Step 2: Convert to fraction form
    1,209,145.10/1,668,585.82 = 665,281.26/x
  3. Step 3: Cross multiply
    1,209,145.10x = 1,668,585.82 × 665,281.26
  4. Step 4: Simplify right side
    1,209,145.10x = 1,110,078,876,747.73
  5. Step 5: Solve for x
    x = 1,110,078,876,747.73/1,209,145.10
  6. Step 6: Final answer
    x = 918,069.20

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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.