Home / 1,109,386.90-1,663,905.30-399,049.30

Finding the Fourth Proportional to 1,109,386.90, 1,663,905.30 and 399,049.30

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Solution

The fourth proportional to 1,109,386.90, 1,663,905.30 and 399,049.30 is: 598,510.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,386.90 : 1,663,905.30 = 399,049.30 : x
  2. Step 2: Convert to fraction form
    1,109,386.90/1,663,905.30 = 399,049.30/x
  3. Step 3: Cross multiply
    1,109,386.90x = 1,663,905.30 × 399,049.30
  4. Step 4: Simplify right side
    1,109,386.90x = 663,980,245,231.29
  5. Step 5: Solve for x
    x = 663,980,245,231.29/1,109,386.90
  6. Step 6: Final answer
    x = 598,510.98

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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.