Home / 1,209,508.90-1,669,234.14-665,755.09

Finding the Fourth Proportional to 1,209,508.90, 1,669,234.14 and 665,755.09

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Solution

The fourth proportional to 1,209,508.90, 1,669,234.14 and 665,755.09 is: 918,803.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,508.90 : 1,669,234.14 = 665,755.09 : x
  2. Step 2: Convert to fraction form
    1,209,508.90/1,669,234.14 = 665,755.09/x
  3. Step 3: Cross multiply
    1,209,508.90x = 1,669,234.14 × 665,755.09
  4. Step 4: Simplify right side
    1,209,508.90x = 1,111,301,125,106.77
  5. Step 5: Solve for x
    x = 1,111,301,125,106.77/1,209,508.90
  6. Step 6: Final answer
    x = 918,803.59

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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.