Home / 1,209,108.12-1,668,595.05-665,245.47

Finding the Fourth Proportional to 1,209,108.12, 1,668,595.05 and 665,245.47

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Solution

The fourth proportional to 1,209,108.12, 1,668,595.05 and 665,245.47 is: 918,052.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,108.12 : 1,668,595.05 = 665,245.47 : x
  2. Step 2: Convert to fraction form
    1,209,108.12/1,668,595.05 = 665,245.47/x
  3. Step 3: Cross multiply
    1,209,108.12x = 1,668,595.05 × 665,245.47
  4. Step 4: Simplify right side
    1,209,108.12x = 1,110,025,298,276.92
  5. Step 5: Solve for x
    x = 1,110,025,298,276.92/1,209,108.12
  6. Step 6: Final answer
    x = 918,052.97

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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.